diff --git a/.github/workflows/update-pull-request.yml b/.github/workflows/update-pull-request.yml
index 98ebcbd..a0a2d00 100644
--- a/.github/workflows/update-pull-request.yml
+++ b/.github/workflows/update-pull-request.yml
@@ -17,9 +17,6 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2
-      with:
-        # Set fetch-depth to 0 to fetch all commit history (necessary for compiling pull request description).
-        fetch-depth: 0
     - name: Install release note compiler
       run: pip install git+https://github.com/octue/conventional-commits
     - name: Compile new pull request description
diff --git a/README.md b/README.md
index 5c22a52..5a165ec 100644
--- a/README.md
+++ b/README.md
@@ -193,7 +193,6 @@ A command-line tool that compiles release notes and pull request descriptions fr
 stopping at the specified stop point. The stop point can be one of:
 * The first commit of the pull request - `PULL_REQUEST_START`
 * The last semantically-versioned release tagged in the git history relative to the checked-out branch - `LAST_RELEASE`
-* The last merged pull request in the git history relative to the checked-out branch - `LAST_PULL_REQUEST`
 
 If breaking changes are indicated in any of the commit messages' bodies via `BREAKING CHANGE` or `BREAKING-CHANGE`,
 these commits are marked and a warning is added to the top of the release notes.
@@ -209,10 +208,10 @@ Note that these comment lines are invisible in rendered markdown.
 ```shell
 usage: compile-release-notes [-h] [--pull-request-url PULL_REQUEST_URL] [--api-token API_TOKEN] [--header HEADER] [--list-item-symbol LIST_ITEM_SYMBOL]
                              [--no-link-to-pull-request]
-                             {LAST_RELEASE,LAST_PULL_REQUEST,PULL_REQUEST_START}
+                             {LAST_RELEASE,PULL_REQUEST_START}
 
 positional arguments:
-  {LAST_RELEASE,LAST_PULL_REQUEST,PULL_REQUEST_START}
+  {LAST_RELEASE,PULL_REQUEST_START}
                         The point in the git history to stop compiling commits into the release notes.
 
 optional arguments:
diff --git a/conventional_commits/check_commit_message.py b/conventional_commits/check_commit_message.py
index e5f2337..13b46c4 100755
--- a/conventional_commits/check_commit_message.py
+++ b/conventional_commits/check_commit_message.py
@@ -65,7 +65,7 @@ def __init__(
         self,
         allowed_commit_codes=None,
         maximum_header_length=72,
-        valid_header_ending_pattern=r"[A-Za-z\d]",
+        valid_header_ending_pattern=r"[A-Za-z\d\"\']",
         require_body=False,
         maximum_body_line_length=72,
     ):
diff --git a/conventional_commits/compile_release_notes.py b/conventional_commits/compile_release_notes.py
index 3783460..a67d7b9 100644
--- a/conventional_commits/compile_release_notes.py
+++ b/conventional_commits/compile_release_notes.py
@@ -14,15 +14,13 @@
 
 
 LAST_RELEASE = "LAST_RELEASE"
-LAST_PULL_REQUEST = "LAST_PULL_REQUEST"
 PULL_REQUEST_START = "PULL_REQUEST_START"
-STOP_POINTS = (LAST_RELEASE, LAST_PULL_REQUEST, PULL_REQUEST_START)
+STOP_POINTS = (LAST_RELEASE, PULL_REQUEST_START)
 
 BREAKING_CHANGE_INDICATOR = "**BREAKING CHANGE:** "
 
 COMMIT_REF_MERGE_PATTERN = re.compile(r"Merge [0-9a-f]+ into [0-9a-f]+")
 SEMANTIC_VERSION_PATTERN = re.compile(r"tag: (\d+\.\d+\.\d+)")
-PULL_REQUEST_INDICATOR = "Merge pull request #"
 
 COMMIT_CODES_TO_HEADINGS_MAPPING = {
     "FEA": "### New features",
@@ -54,7 +52,7 @@ class ReleaseNotesCompiler:
     comment lines `<!--- START AUTOGENERATED NOTES --->` and `<!--- END AUTOGENERATED NOTES --->` will be replaced -
     anything outside of this will appear in the new release notes.
 
-    :param str stop_point: the point in the git history up to which commit messages should be used - should be either "LAST_RELEASE" or "LAST_PULL_REQUEST"
+    :param str stop_point: the point in the git history up to which commit messages should be used - should be either "LAST_RELEASE" or "PULL_REQUEST_START"
     :param str|None pull_request_url: GitHub API URL for the pull request - this can be accessed in a GitHub workflow as ${{ github.event.pull_request.url }}
     :param str|None api_token: GitHub API token - this can be accessed in a GitHub workflow as ${{ secrets.GITHUB_TOKEN }}
     :param str header: the header to put above the autogenerated release notes, including any markdown styling (defaults to "## Contents")
@@ -93,12 +91,6 @@ def __init__(
         self.commit_codes_to_headings_mapping = commit_codes_to_headings_mapping or COMMIT_CODES_TO_HEADINGS_MAPPING
         self.include_link_to_pull_request = include_link_to_pull_request
 
-        if self.stop_point == PULL_REQUEST_START:
-            if self.current_pull_request is not None:
-                self.base_branch = self.current_pull_request["base"]["ref"]
-            else:
-                self.stop_point = LAST_RELEASE
-
         logger.info(f"Using {self.stop_point!r} stop point.")
 
     def compile_release_notes(self):
@@ -117,8 +109,11 @@ def compile_release_notes(self):
         if self.previous_notes and SKIP_INDICATOR in self.previous_notes:
             return self.previous_notes
 
-        git_log = self._get_git_log()
-        parsed_commits, unparsed_commits = self._parse_commit_messages(git_log)
+        if self.current_pull_request:
+            parsed_commits, unparsed_commits = self._parse_commit_messages_from_github()
+        else:
+            parsed_commits, unparsed_commits = self._parse_commit_messages_from_git_log()
+
         categorised_commit_messages = self._categorise_commit_messages(parsed_commits, unparsed_commits)
         autogenerated_release_notes = self._build_release_notes(categorised_commit_messages)
 
@@ -143,7 +138,7 @@ def _get_current_pull_request(self, pull_request_url, api_token):
 
         :param str pull_request_url: the GitHub API URL for the pull request
         :param str|None api_token: GitHub API token
-        :return dict:
+        :return dict|None:
         """
         if api_token is None:
             headers = {}
@@ -153,13 +148,18 @@ def _get_current_pull_request(self, pull_request_url, api_token):
         response = requests.get(pull_request_url, headers=headers)
 
         if response.status_code == 200:
-            return response.json()
+            pull_request = response.json()
+            pull_request["commits"] = requests.get(pull_request["commits_url"], headers=headers).json()
+            return pull_request
 
         logger.warning(
             f"Pull request could not be accessed; resorting to using {LAST_RELEASE} stop point.\n"
             f"{response.status_code}: {response.text}."
         )
 
+        self.stop_point = LAST_RELEASE
+        return None
+
     def _get_git_log(self):
         """Get the one-line decorated git log formatted in the pattern of "hash|§header|§body|§decoration@@@".
 
@@ -171,30 +171,27 @@ def _get_git_log(self):
         * The specific characters used for the delimiters have been chosen so that they are very uncommon to reduce
           delimiting errors
 
-        :return str:
+        :return list(str):
         """
         return (
             subprocess.run(["git", "log", "--pretty=format:%h|§%s|§%b|§%d@@@"], capture_output=True)
             .stdout.strip()
             .decode()
-        )
+        ).split("@@@")
 
-    def _parse_commit_messages(self, formatted_one_line_git_log):
-        """Parse commit messages from the git log (formatted using `--pretty=format:%s|%d`) until the stop point is
-        reached. The parsed commit messages are returned separately to any that fail to parse.
+    def _parse_commit_messages_from_git_log(self):
+        """Parse commit messages from the git log (formatted using `--pretty=format:%h|§%s|§%b|§%d@@@`) until the stop
+        point is reached. The parsed commit messages are returned separately to any that fail to parse.
 
-        :param str formatted_one_line_git_log:
         :return list(tuple), list(str):
         """
         parsed_commits = []
         unparsed_commits = []
 
-        commits = formatted_one_line_git_log.split("@@@")
-
-        for commit in commits:
+        for commit in self._get_git_log():
             hash, header, body, decoration = commit.split("|§")
 
-            if self._is_stop_point(header, decoration):
+            if "tag" in decoration and bool(SEMANTIC_VERSION_PATTERN.search(decoration)):
                 break
 
             # A colon separating the commit code from the commit header is required - keep commit messages that
@@ -210,27 +207,39 @@ def _parse_commit_messages(self, formatted_one_line_git_log):
             code, *header = header.split(":")
             header = ":".join(header)
 
-            parsed_commits.append((code.strip(), header.strip(), body.strip(), decoration.strip()))
+            parsed_commits.append((code.strip(), header.strip(), body.strip()))
 
         return parsed_commits, unparsed_commits
 
-    def _is_stop_point(self, message, decoration):
-        """Check if this commit header is the stop point for collecting commits for the release notes.
+    def _parse_commit_messages_from_github(self):
+        """Parse commit messages from the GitHub pull request. The parsed commit messages are returned separately to
+        any that fail to parse.
 
-        :param str message:
-        :param str decoration:
-        :return bool:
+        :return list(tuple), list(str):
         """
-        if self.stop_point == PULL_REQUEST_START:
-            if self.base_branch in decoration:
-                return True
+        parsed_commits = []
+        unparsed_commits = []
+
+        for commit in self.current_pull_request["commits"]:
+            header, *body = commit["commit"]["message"].split("\n")
+            body = "\n".join(body)
+
+            # A colon separating the commit code from the commit header is required - keep commit messages that
+            # don't conform to this but put them into an unparsed category. Ignore commits that are merges of one
+            # commit ref into another (GitHub Actions produces these - they don't appear in the actual history of
+            # the branch so can be safely ignored when making release notes).
+            if ":" not in header:
+                if not COMMIT_REF_MERGE_PATTERN.search(header):
+                    unparsed_commits.append(header.strip())
+                continue
+
+            # Allow commit headers with extra colons.
+            code, *header = header.split(":")
+            header = ":".join(header)
 
-        elif self.stop_point == LAST_RELEASE:
-            if "tag" in decoration:
-                return bool(SEMANTIC_VERSION_PATTERN.search(decoration))
+            parsed_commits.append((code.strip(), header.strip(), body.strip()))
 
-        elif self.stop_point == LAST_PULL_REQUEST:
-            return PULL_REQUEST_INDICATOR in message
+        return parsed_commits, unparsed_commits
 
     def _categorise_commit_messages(self, parsed_commits, unparsed_commits):
         """Categorise the commit messages into headed sections. Unparsed commits are put under an "uncategorised"
@@ -243,7 +252,7 @@ def _categorise_commit_messages(self, parsed_commits, unparsed_commits):
         release_notes = {heading: [] for heading in self.commit_codes_to_headings_mapping.values()}
         release_notes[BREAKING_CHANGE_COUNT_KEY] = 0
 
-        for code, header, body, _ in parsed_commits:
+        for code, header, body in parsed_commits:
             try:
                 if any(indicator in body for indicator in CONVENTIONAL_COMMIT_BREAKING_CHANGE_INDICATORS):
                     commit_note = BREAKING_CHANGE_INDICATOR + header
diff --git a/examples/release_notes_compiler/workflow.yml b/examples/release_notes_compiler/workflow.yml
index a8fbe08..68b3e6f 100644
--- a/examples/release_notes_compiler/workflow.yml
+++ b/examples/release_notes_compiler/workflow.yml
@@ -11,9 +11,6 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2
-      with:
-        # Set fetch-depth to 0 to fetch all commit history (necessary for compiling pull request description).
-        fetch-depth: 0
     - name: Install release note compiler
       run: pip install git+https://github.com/octue/conventional-commits
     - name: Compile new pull request description
diff --git a/setup.cfg b/setup.cfg
index 3b839b9..b447a38 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,6 @@
 [metadata]
 name = conventional_commits
-version = 0.4.1
+version = 0.5.0
 description = A pre-commit hook, semantic version checker, and release note compiler for facilitating continuous deployment via Conventional Commits.
 long_description = file: README.md
 long_description_content_type = text/markdown
diff --git a/tests/test_check_commit_message.py b/tests/test_check_commit_message.py
index 2948cd8..e198fac 100644
--- a/tests/test_check_commit_message.py
+++ b/tests/test_check_commit_message.py
@@ -44,6 +44,10 @@ def test_non_blank_header_separator_line_raises_error(self):
         with self.assertRaises(ValueError):
             ConventionalCommitMessageChecker().check_commit_message(["FIX: Fix this bug", "Body started too early."])
 
+    def test_valid_header_ending(self):
+        """Test that a commit message with a valid header ending is ok."""
+        ConventionalCommitMessageChecker().check_commit_message(['REV: Reverts "FIX: Fix a bug"'])
+
     def test_with_body_when_body_not_required(self):
         """Test that a commit message with a valid header and body when a body is not required is ok."""
         ConventionalCommitMessageChecker().check_commit_message(["FIX: Fix this bug", "", "This is the body."])
diff --git a/tests/test_compile_release_notes.py b/tests/test_compile_release_notes.py
index f67b340..5cfa6fd 100644
--- a/tests/test_compile_release_notes.py
+++ b/tests/test_compile_release_notes.py
@@ -4,24 +4,38 @@
 from conventional_commits.compile_release_notes import ReleaseNotesCompiler, main
 
 
-MOCK_GIT_LOG = "@@@\n".join(
-    [
-        "3e7dc54|§REF: Merge commit message checker modules|§|§ (HEAD -> refactor/test-release-notes-generator, origin/refactor/test-release-notes-generator)",
-        "fabd2ab|§MRG: Merge pull request #3 from octue/feature/add-other-conventional-commit-ci-components|§|§",
-        "ef77729|§CHO: Remove hook installation from branch|§|§ (tag: 0.0.3, origin/main, origin/HEAD, main)",
-        "b043bc8|§ENH: Support getting versions from poetry and npm|§|§",
-        "27dcef0|§FIX: Fix semantic version script; add missing config|§|§",
-    ]
-)
-
-EXPECTED_LAST_PULL_REQUEST_RELEASE_NOTES_WITH_NON_GENERATED_SECTION = "\n".join(
+MOCK_GIT_LOG = [
+    "3e7dc54|§REF: Merge commit message checker modules|§|§ (HEAD -> refactor/test-release-notes-generator, origin/refactor/test-release-notes-generator)",
+    "fabd2ab|§MRG: Merge pull request #3 from octue/feature/add-other-conventional-commit-ci-components|§|§",
+    "ef77729|§CHO: Remove hook installation from branch|§|§ (tag: 0.0.3, origin/main, origin/HEAD, main)",
+    "b043bc8|§ENH: Support getting versions from poetry and npm|§|§",
+    "27dcef0|§FIX: Fix semantic version script; add missing config|§|§",
+]
+
+MOCK_PULL_REQUEST_COMMITS = [
+    {
+        "commit": {
+            "message": "MRG: Merge pull request #3 from octue/feature/add-other-conventional-commit-ci-components"
+        }
+    },
+    {"commit": {"message": "ENH: Support getting versions from poetry and npm"}},
+    {"commit": {"message": "FIX: Fix semantic version script; add missing config"}},
+]
+
+EXPECTED_PULL_REQUEST_START_RELEASE_NOTES_WITH_NON_GENERATED_SECTION = "\n".join(
     [
         "BLAH BLAH BLAH",
         "<!--- START AUTOGENERATED NOTES --->",
         "## Contents",
         "",
-        "### Refactoring",
-        "- Merge commit message checker modules",
+        "### Enhancements",
+        "- Support getting versions from poetry and npm",
+        "",
+        "### Fixes",
+        "- Fix semantic version script; add missing config",
+        "",
+        "### Other",
+        "- Merge pull request #3 from octue/feature/add-other-conventional-commit-ci-components",
         "",
         "<!--- END AUTOGENERATED NOTES --->",
         "YUM YUM YUM",
@@ -41,32 +55,32 @@ def test_unsupported_stop_point_results_in_error(self):
         with self.assertRaises(ValueError):
             ReleaseNotesCompiler(stop_point="blah", pull_request_url="")
 
-    def test_skip_release_notes_auto_generations(self):
+    def test_skip_release_notes_auto_generation(self):
         """Test that release notes autogeneration is skipped if the skip indicator is present in the previous notes."""
         previous_notes = (
             "BLAH BLAH BLAH\n<!--- START AUTOGENERATED NOTES --->\n<!--- END AUTOGENERATED NOTES --->YUM YUM YUM"
             "<!--- SKIP AUTOGENERATED NOTES --->"
         )
 
-        with patch(self.GIT_LOG_METHOD_PATH, return_value=MOCK_GIT_LOG):
-            with patch(self.GET_CURRENT_PULL_REQUEST_PATH, return_value={"body": previous_notes}):
-                release_notes = ReleaseNotesCompiler(
-                    stop_point="LAST_PULL_REQUEST",
-                    pull_request_url=self.MOCK_PULL_REQUEST_URL,
-                    include_link_to_pull_request=False,
-                ).compile_release_notes()
+        with patch(
+            self.GET_CURRENT_PULL_REQUEST_PATH,
+            return_value={"body": previous_notes, "commits": MOCK_PULL_REQUEST_COMMITS},
+        ):
+            release_notes = ReleaseNotesCompiler(
+                stop_point="PULL_REQUEST_START",
+                pull_request_url=self.MOCK_PULL_REQUEST_URL,
+                include_link_to_pull_request=False,
+            ).compile_release_notes()
 
         self.assertEqual(release_notes, previous_notes)
 
     def test_last_release_stop_point(self):
         """Test generating release notes that stop at the last release."""
         with patch(self.GIT_LOG_METHOD_PATH, return_value=MOCK_GIT_LOG):
-            with patch(self.GET_CURRENT_PULL_REQUEST_PATH, return_value={"body": ""}):
-                release_notes = ReleaseNotesCompiler(
-                    stop_point="LAST_RELEASE",
-                    pull_request_url=self.MOCK_PULL_REQUEST_URL,
-                    include_link_to_pull_request=False,
-                ).compile_release_notes()
+            release_notes = ReleaseNotesCompiler(
+                stop_point="LAST_RELEASE",
+                include_link_to_pull_request=False,
+            ).compile_release_notes()
 
         expected = "\n".join(
             [
@@ -85,89 +99,17 @@ def test_last_release_stop_point(self):
 
         self.assertEqual(release_notes, expected)
 
-    def test_last_pull_request_stop_point(self):
-        """Test generating release notes that stop at the last pull request merge."""
-        with patch(self.GIT_LOG_METHOD_PATH, return_value=MOCK_GIT_LOG):
-            with patch(self.GET_CURRENT_PULL_REQUEST_PATH, return_value={"body": ""}):
-                release_notes = ReleaseNotesCompiler(
-                    stop_point="LAST_PULL_REQUEST",
-                    pull_request_url=self.MOCK_PULL_REQUEST_URL,
-                    include_link_to_pull_request=False,
-                ).compile_release_notes()
-
-        expected = "\n".join(
-            [
-                "<!--- START AUTOGENERATED NOTES --->",
-                "## Contents",
-                "",
-                "### Refactoring",
-                "- Merge commit message checker modules",
-                "",
-                "<!--- END AUTOGENERATED NOTES --->",
-            ]
-        )
-
-        self.assertEqual(release_notes, expected)
-
-    def test_branch_point_stop_point(self):
-        """Test generating release notes that stop at the last branch point."""
-        mock_git_log = "@@@\n".join(
-            [
-                "27dcef0|§TST: Improve presentation of long strings|§|§ (fix/fix-other-release-notes-stop-point-bug)",
-                "358ffd5|§REF: Move stop point checking into separate method|§|§",
-                "44927c6|§FIX: Fix LAST_PULL_REQUEST stop point bug|§|§",
-                "7cdc980|§FIX: Ensure uncategorised commits are not lost|§|§ (fix/allow-extra-colons-in-commit-message)",
-                "741bb8d|§OPS: Increase version to 0.0.11|§|§ (tag: 0.0.11, my-base-branch)",
-                "27092a4|§FIX: Allow extra colons in commit headers in release notes compiler|§|§",
-                "6dcdc41|§MRG: Merge pull request #17 from octue/fix/fix-release-notes-stop-point-bug|§|§ (tag: 0.0.10)",
-            ]
-        )
-
-        with patch(self.GIT_LOG_METHOD_PATH, return_value=mock_git_log):
-            with patch(
-                self.GET_CURRENT_PULL_REQUEST_PATH, return_value={"body": "", "base": {"ref": "my-base-branch"}}
-            ):
-                release_notes = ReleaseNotesCompiler(
-                    stop_point="PULL_REQUEST_START",
-                    pull_request_url=self.MOCK_PULL_REQUEST_URL,
-                    include_link_to_pull_request=False,
-                ).compile_release_notes()
-
-        expected = "\n".join(
-            [
-                "<!--- START AUTOGENERATED NOTES --->",
-                "## Contents",
-                "",
-                "### Fixes",
-                "- Fix LAST_PULL_REQUEST stop point bug",
-                "- Ensure uncategorised commits are not lost",
-                "",
-                "### Refactoring",
-                "- Move stop point checking into separate method",
-                "",
-                "### Testing",
-                "- Improve presentation of long strings",
-                "",
-                "<!--- END AUTOGENERATED NOTES --->",
-            ]
-        )
-
-        self.assertEqual(release_notes, expected)
-
-    def test_compiler_reverts_to_last_release_stop_point_if_branch_point_is_not_found(self):
-        """Ensure the release note compiler reverts to the LAST_RELEASE stop point if no pull request URL is provided."""
-        release_note_compiler = ReleaseNotesCompiler(stop_point="PULL_REQUEST_START")
-        self.assertEqual(release_note_compiler.stop_point, "LAST_RELEASE")
-
     def test_with_previous_release_notes_missing_autogeneration_markers(self):
         """Test that previous release notes are not overwritten when the autogeneration markers are missing."""
-        with patch(self.GIT_LOG_METHOD_PATH, return_value=MOCK_GIT_LOG):
-            with patch(self.GET_CURRENT_PULL_REQUEST_PATH, return_value={"body": "BLAH BLAH BLAH"}):
-                release_notes = ReleaseNotesCompiler(
-                    stop_point="LAST_PULL_REQUEST",
-                    pull_request_url=self.MOCK_PULL_REQUEST_URL,
-                    include_link_to_pull_request=False,
-                ).compile_release_notes()
+        with patch(
+            self.GET_CURRENT_PULL_REQUEST_PATH,
+            return_value={"body": "BLAH BLAH BLAH", "commits": MOCK_PULL_REQUEST_COMMITS},
+        ):
+            release_notes = ReleaseNotesCompiler(
+                stop_point="PULL_REQUEST_START",
+                pull_request_url=self.MOCK_PULL_REQUEST_URL,
+                include_link_to_pull_request=False,
+            ).compile_release_notes()
 
         expected = "\n".join(
             [
@@ -175,8 +117,14 @@ def test_with_previous_release_notes_missing_autogeneration_markers(self):
                 "<!--- START AUTOGENERATED NOTES --->",
                 "## Contents",
                 "",
-                "### Refactoring",
-                "- Merge commit message checker modules",
+                "### Enhancements",
+                "- Support getting versions from poetry and npm",
+                "",
+                "### Fixes",
+                "- Fix semantic version script; add missing config",
+                "",
+                "### Other",
+                "- Merge pull request #3 from octue/feature/add-other-conventional-commit-ci-components",
                 "",
                 "<!--- END AUTOGENERATED NOTES --->",
             ]
@@ -192,15 +140,17 @@ def test_with_previous_release_notes_with_empty_autogenerated_section(self):
             "BLAH BLAH BLAH\n<!--- START AUTOGENERATED NOTES --->\n<!--- END AUTOGENERATED NOTES --->YUM YUM YUM"
         )
 
-        with patch(self.GIT_LOG_METHOD_PATH, return_value=MOCK_GIT_LOG):
-            with patch(self.GET_CURRENT_PULL_REQUEST_PATH, return_value={"body": previous_notes}):
-                release_notes = ReleaseNotesCompiler(
-                    stop_point="LAST_PULL_REQUEST",
-                    pull_request_url=self.MOCK_PULL_REQUEST_URL,
-                    include_link_to_pull_request=False,
-                ).compile_release_notes()
+        with patch(
+            self.GET_CURRENT_PULL_REQUEST_PATH,
+            return_value={"body": previous_notes, "commits": MOCK_PULL_REQUEST_COMMITS},
+        ):
+            release_notes = ReleaseNotesCompiler(
+                stop_point="PULL_REQUEST_START",
+                pull_request_url=self.MOCK_PULL_REQUEST_URL,
+                include_link_to_pull_request=False,
+            ).compile_release_notes()
 
-        self.assertEqual(release_notes, EXPECTED_LAST_PULL_REQUEST_RELEASE_NOTES_WITH_NON_GENERATED_SECTION)
+        self.assertEqual(release_notes, EXPECTED_PULL_REQUEST_START_RELEASE_NOTES_WITH_NON_GENERATED_SECTION)
 
     def test_with_previous_release_notes_with_other_text_on_autogeneration_markers_lines(self):
         """Test that text outside but on the same line as the autogeneration markers in previous release notes is not
@@ -210,15 +160,17 @@ def test_with_previous_release_notes_with_other_text_on_autogeneration_markers_l
             "BLAH BLAH BLAH<!--- START AUTOGENERATED NOTES --->\n<!--- END AUTOGENERATED NOTES --->YUM YUM YUM"
         )
 
-        with patch(self.GIT_LOG_METHOD_PATH, return_value=MOCK_GIT_LOG):
-            with patch(self.GET_CURRENT_PULL_REQUEST_PATH, return_value={"body": previous_notes}):
-                release_notes = ReleaseNotesCompiler(
-                    stop_point="LAST_PULL_REQUEST",
-                    pull_request_url=self.MOCK_PULL_REQUEST_URL,
-                    include_link_to_pull_request=False,
-                ).compile_release_notes()
+        with patch(
+            self.GET_CURRENT_PULL_REQUEST_PATH,
+            return_value={"body": previous_notes, "commits": MOCK_PULL_REQUEST_COMMITS},
+        ):
+            release_notes = ReleaseNotesCompiler(
+                stop_point="PULL_REQUEST_START",
+                pull_request_url=self.MOCK_PULL_REQUEST_URL,
+                include_link_to_pull_request=False,
+            ).compile_release_notes()
 
-        self.assertEqual(release_notes, EXPECTED_LAST_PULL_REQUEST_RELEASE_NOTES_WITH_NON_GENERATED_SECTION)
+        self.assertEqual(release_notes, EXPECTED_PULL_REQUEST_START_RELEASE_NOTES_WITH_NON_GENERATED_SECTION)
 
     def test_autogenerated_section_gets_overwritten(self):
         """Test that text enclosed by the autogeneration markers is overwritten."""
@@ -226,21 +178,29 @@ def test_autogenerated_section_gets_overwritten(self):
             "<!--- START AUTOGENERATED NOTES --->\nBAM BAM BAM\nWAM WAM WAM\n<!--- END AUTOGENERATED NOTES --->"
         )
 
-        with patch(self.GIT_LOG_METHOD_PATH, return_value=MOCK_GIT_LOG):
-            with patch(self.GET_CURRENT_PULL_REQUEST_PATH, return_value={"body": previous_notes}):
-                release_notes = ReleaseNotesCompiler(
-                    stop_point="LAST_PULL_REQUEST",
-                    pull_request_url=self.MOCK_PULL_REQUEST_URL,
-                    include_link_to_pull_request=False,
-                ).compile_release_notes()
+        with patch(
+            self.GET_CURRENT_PULL_REQUEST_PATH,
+            return_value={"body": previous_notes, "commits": MOCK_PULL_REQUEST_COMMITS},
+        ):
+            release_notes = ReleaseNotesCompiler(
+                stop_point="PULL_REQUEST_START",
+                pull_request_url=self.MOCK_PULL_REQUEST_URL,
+                include_link_to_pull_request=False,
+            ).compile_release_notes()
 
         expected = "\n".join(
             [
                 "<!--- START AUTOGENERATED NOTES --->",
                 "## Contents",
                 "",
-                "### Refactoring",
-                "- Merge commit message checker modules",
+                "### Enhancements",
+                "- Support getting versions from poetry and npm",
+                "",
+                "### Fixes",
+                "- Fix semantic version script; add missing config",
+                "",
+                "### Other",
+                "- Merge pull request #3 from octue/feature/add-other-conventional-commit-ci-components",
                 "",
                 "<!--- END AUTOGENERATED NOTES --->",
             ]
@@ -255,24 +215,24 @@ def test_autogenerated_section_gets_overwritten_but_text_outside_does_not(self):
             "YUM YUM"
         )
 
-        with patch(self.GIT_LOG_METHOD_PATH, return_value=MOCK_GIT_LOG):
-            with patch(self.GET_CURRENT_PULL_REQUEST_PATH, return_value={"body": previous_notes}):
-                release_notes = ReleaseNotesCompiler(
-                    stop_point="LAST_PULL_REQUEST",
-                    pull_request_url=self.MOCK_PULL_REQUEST_URL,
-                    include_link_to_pull_request=False,
-                ).compile_release_notes()
+        with patch(
+            self.GET_CURRENT_PULL_REQUEST_PATH,
+            return_value={"body": previous_notes, "commits": MOCK_PULL_REQUEST_COMMITS},
+        ):
+            release_notes = ReleaseNotesCompiler(
+                stop_point="PULL_REQUEST_START",
+                pull_request_url=self.MOCK_PULL_REQUEST_URL,
+                include_link_to_pull_request=False,
+            ).compile_release_notes()
 
-        self.assertEqual(release_notes, EXPECTED_LAST_PULL_REQUEST_RELEASE_NOTES_WITH_NON_GENERATED_SECTION)
+        self.assertEqual(release_notes, EXPECTED_PULL_REQUEST_START_RELEASE_NOTES_WITH_NON_GENERATED_SECTION)
 
     def test_commit_messages_in_non_standard_format_are_left_uncategorised(self):
         """Test that commit messages in a non-standard format are put under an uncategorised heading."""
-        mock_git_log = "fabd2ab|§This is not in the right format|§|§@@@\n27dcef0|§FIX: Fix a bug|§|§"
+        mock_git_log = ["fabd2ab|§This is not in the right format|§|§", "27dcef0|§FIX: Fix a bug|§|§"]
 
         with patch(self.GIT_LOG_METHOD_PATH, return_value=mock_git_log):
-            release_notes = ReleaseNotesCompiler(
-                stop_point="LAST_PULL_REQUEST", include_link_to_pull_request=False
-            ).compile_release_notes()
+            release_notes = ReleaseNotesCompiler(stop_point="LAST_RELEASE").compile_release_notes()
 
         expected = "\n".join(
             [
@@ -293,15 +253,10 @@ def test_commit_messages_in_non_standard_format_are_left_uncategorised(self):
 
     def test_commit_messages_with_unrecognised_commit_codes_are_categorised_as_other(self):
         """Test that commit messages with an unrecognised commit code are categorised under "other"."""
-        mock_git_log = "27dcef0|§BAM: An unrecognised commit code|§|§@@@\nfabd2ab|§FIX: Fix a bug|§|§"
+        mock_git_log = ["27dcef0|§BAM: An unrecognised commit code|§|§", "fabd2ab|§FIX: Fix a bug|§|§"]
 
         with patch(self.GIT_LOG_METHOD_PATH, return_value=mock_git_log):
-            with patch(self.GET_CURRENT_PULL_REQUEST_PATH, return_value={"body": ""}):
-                release_notes = ReleaseNotesCompiler(
-                    stop_point="LAST_PULL_REQUEST",
-                    pull_request_url=self.MOCK_PULL_REQUEST_URL,
-                    include_link_to_pull_request=False,
-                ).compile_release_notes()
+            release_notes = ReleaseNotesCompiler(stop_point="LAST_RELEASE").compile_release_notes()
 
         expected = "\n".join(
             [
@@ -329,25 +284,29 @@ def test_updating_release_notes_works_and_does_not_add_extra_newlines_after_auto
             "BLAH BLAH BLAH\n<!--- START AUTOGENERATED NOTES ---><!--- END AUTOGENERATED NOTES --->YUM YUM YUM"
         )
 
-        with patch(self.GIT_LOG_METHOD_PATH, return_value=MOCK_GIT_LOG):
-            with patch(self.GET_CURRENT_PULL_REQUEST_PATH, return_value={"body": previous_notes}):
-                release_notes_1 = ReleaseNotesCompiler(
-                    stop_point="LAST_PULL_REQUEST",
-                    pull_request_url=self.MOCK_PULL_REQUEST_URL,
-                    include_link_to_pull_request=False,
-                ).compile_release_notes()
+        with patch(
+            self.GET_CURRENT_PULL_REQUEST_PATH,
+            return_value={"body": previous_notes, "commits": MOCK_PULL_REQUEST_COMMITS},
+        ):
+            release_notes_1 = ReleaseNotesCompiler(
+                stop_point="PULL_REQUEST_START",
+                pull_request_url=self.MOCK_PULL_REQUEST_URL,
+                include_link_to_pull_request=False,
+            ).compile_release_notes()
 
         # Add a new commit to the git log.
-        updated_mock_git_log = "fabd2ab|§FIX: Fix a bug|§|§@@@\n" + MOCK_GIT_LOG
+        updated_pull_request_commits = [{"commit": {"message": "FIX: Fix a bug"}}] + MOCK_PULL_REQUEST_COMMITS
 
         # Run the compiler on the new git log to update the previous set of release notes.
-        with patch(self.GIT_LOG_METHOD_PATH, return_value=updated_mock_git_log):
-            with patch(self.GET_CURRENT_PULL_REQUEST_PATH, return_value={"body": release_notes_1}):
-                release_notes_2 = ReleaseNotesCompiler(
-                    stop_point="LAST_PULL_REQUEST",
-                    pull_request_url=self.MOCK_PULL_REQUEST_URL,
-                    include_link_to_pull_request=False,
-                ).compile_release_notes()
+        with patch(
+            self.GET_CURRENT_PULL_REQUEST_PATH,
+            return_value={"body": release_notes_1, "commits": updated_pull_request_commits},
+        ):
+            release_notes_2 = ReleaseNotesCompiler(
+                stop_point="PULL_REQUEST_START",
+                pull_request_url=self.MOCK_PULL_REQUEST_URL,
+                include_link_to_pull_request=False,
+            ).compile_release_notes()
 
         expected = "\n".join(
             [
@@ -355,11 +314,15 @@ def test_updating_release_notes_works_and_does_not_add_extra_newlines_after_auto
                 "<!--- START AUTOGENERATED NOTES --->",
                 "## Contents",
                 "",
+                "### Enhancements",
+                "- Support getting versions from poetry and npm",
+                "",
                 "### Fixes",
                 "- Fix a bug",
+                "- Fix semantic version script; add missing config",
                 "",
-                "### Refactoring",
-                "- Merge commit message checker modules",
+                "### Other",
+                "- Merge pull request #3 from octue/feature/add-other-conventional-commit-ci-components",
                 "",
                 "<!--- END AUTOGENERATED NOTES --->",
                 "YUM YUM YUM",
@@ -373,31 +336,29 @@ def test_last_release_stop_point_is_respected_even_if_tagged_commit_has_no_commi
         made on GitHub that isn't subject to the Conventional Commits pre-commit check that we use locally) has no
         commit code.
         """
-        mock_git_log = "@@@\n".join(
-            [
-                "3e7dc54|§OPS: Update mkver.conf to correct pattern|§|§ (HEAD -> develop/issue-wq-521-turbine-prevailing-direction, origin/develop/issue-wq-521-turbine-prevailing-direction)",
-                "fabd2ab|§OPS: Update conventional commit version in python-ci|§|§",
-                "ef77729|§DOC: update readme for new pre-commit ops|§|§",
-                "b043bc8|§OPS: update pull request workflow updated|§|§",
-                "27dcef0|§DEP: Version bump to 0.1.0|§|§",
-                "358ffd5|§OPS: Delete repo issue and pr template|§|§",
-                "44927c6|§OPS: Precommit config updated to use conventional commit|§|§",
-                "6589a8e|§CHO: Add _mocks file with the mocked classes|§|§",
-                "7cdc980|§ENH: Windmap file inputs format now supports space separated headers|§|§",
-                "741bb8d|§ENH: Add prevailing_wind_direction to twine file output schema|§|§",
-                "27092a4|§ENH: Handle edge case when wind dir not in the data and WD_<whatever> in the time series file. Add tests for checking for None prevailing wind directions|§|§",
-                "6dcdc41|§ENH: Mast prevailing wind direction happens when each mast time series file is imported instead of in every turbine|§|§",
-                "b69e7e1|§FEA: Add turbine prevailing wind direction to the result as a property of turbine|§|§",
-                "0b20f41|§CHO: Clear up the comments and add logging|§|§",
-                "05ec990|§CHORE: Remove unused test|§|§",
-                "e506bb4|§ENH: The prevailing wind calculation now de-seasons the count of the bins and determines the prevailing wind direction. Slow as *|§|§",
-                "9c125ab|§FEAT: Added a utility module which calculates the prevailing wind direction given a wind direction time series|§|§",
-                "3d981b6|§Merge pull request #103 from windpioneers/release/0.0.11|§|§ (tag: 0.0.11, origin/main, main)",
-                "9b88bc6|§ENH: Added an assert to bring the coverage up|§|§",
-                "17d8de1|§ENH: Remove a json turbine data importer, we are not going to be importing a turbine from json 'cos we use pcu for that|§|§",
-                "d242271|§DEP: Update pcu version to 0.0.6|§|§",
-            ]
-        )
+        mock_git_log = [
+            "3e7dc54|§OPS: Update mkver.conf to correct pattern|§|§ (HEAD -> develop/issue-wq-521-turbine-prevailing-direction, origin/develop/issue-wq-521-turbine-prevailing-direction)",
+            "fabd2ab|§OPS: Update conventional commit version in python-ci|§|§",
+            "ef77729|§DOC: update readme for new pre-commit ops|§|§",
+            "b043bc8|§OPS: update pull request workflow updated|§|§",
+            "27dcef0|§DEP: Version bump to 0.1.0|§|§",
+            "358ffd5|§OPS: Delete repo issue and pr template|§|§",
+            "44927c6|§OPS: Precommit config updated to use conventional commit|§|§",
+            "6589a8e|§CHO: Add _mocks file with the mocked classes|§|§",
+            "7cdc980|§ENH: Windmap file inputs format now supports space separated headers|§|§",
+            "741bb8d|§ENH: Add prevailing_wind_direction to twine file output schema|§|§",
+            "27092a4|§ENH: Handle edge case when wind dir not in the data and WD_<whatever> in the time series file. Add tests for checking for None prevailing wind directions|§|§",
+            "6dcdc41|§ENH: Mast prevailing wind direction happens when each mast time series file is imported instead of in every turbine|§|§",
+            "b69e7e1|§FEA: Add turbine prevailing wind direction to the result as a property of turbine|§|§",
+            "0b20f41|§CHO: Clear up the comments and add logging|§|§",
+            "05ec990|§CHORE: Remove unused test|§|§",
+            "e506bb4|§ENH: The prevailing wind calculation now de-seasons the count of the bins and determines the prevailing wind direction. Slow as *|§|§",
+            "9c125ab|§FEAT: Added a utility module which calculates the prevailing wind direction given a wind direction time series|§|§",
+            "3d981b6|§Merge pull request #103 from windpioneers/release/0.0.11|§|§ (tag: 0.0.11, origin/main, main)",
+            "9b88bc6|§ENH: Added an assert to bring the coverage up|§|§",
+            "17d8de1|§ENH: Remove a json turbine data importer, we are not going to be importing a turbine from json 'cos we use pcu for that|§|§",
+            "d242271|§DEP: Update pcu version to 0.0.6|§|§",
+        ]
 
         with patch(self.GIT_LOG_METHOD_PATH, return_value=mock_git_log):
             release_notes = ReleaseNotesCompiler(
@@ -444,55 +405,14 @@ def test_last_release_stop_point_is_respected_even_if_tagged_commit_has_no_commi
 
         self.assertEqual(release_notes, expected_release_notes)
 
-    def test_last_pull_request_stop_point_is_respected_even_if_tagged_commit_has_no_commit_code(self):
-        """Test that the `LAST_PULL_REQUEST` stop point is still respected even if the tagged commit (usually a merge
-        commit made on GitHub that isn't subject to the Conventional Commits pre-commit check that we use locally) has
-        no commit code.
-        """
-        mock_git_log = "@@@\n".join(
-            [
-                "3e7dc54|§OPS: Update mkver.conf to correct pattern|§|§ (HEAD -> develop/issue-wq-521-turbine-prevailing)",
-                "fabd2ab|§OPS: update pull request workflow updated|§|§",
-                "ef77729|§DEP: Version bump to 0.1.0|§|§",
-                "b043bc8|§Merge pull request #3 from octue/feature/add-other-conventional-commit-ci-components|§|§",
-                "27dcef0|§OPS: Precommit config updated to use conventional commit|§|§",
-                "358ffd5|§CHO: Add _mocks file with the mocked classes|§|§",
-            ]
-        )
-
-        with patch(self.GIT_LOG_METHOD_PATH, return_value=mock_git_log):
-            release_notes = ReleaseNotesCompiler(
-                stop_point="LAST_PULL_REQUEST", include_link_to_pull_request=False
-            ).compile_release_notes()
-
-        expected_release_notes = "\n".join(
-            [
-                "<!--- START AUTOGENERATED NOTES --->",
-                "## Contents",
-                "",
-                "### Operations",
-                "- Update mkver.conf to correct pattern",
-                "- update pull request workflow updated",
-                "",
-                "### Dependencies",
-                "- Version bump to 0.1.0",
-                "",
-                "<!--- END AUTOGENERATED NOTES --->",
-            ]
-        )
-
-        self.assertEqual(release_notes, expected_release_notes)
-
     def test_commit_message_with_extra_colons_are_still_categorised(self):
         """Test that commit headers containing extra colons in addition to the colon splitting the commit code from the
         rest of the commit header are still categorised correctly.
         """
-        mock_git_log = "@@@\n".join(
-            [
-                "3e7dc54|§OPS: My message: something|§|§",
-                "fabd2ab|§OPS: Update conventional commit version in python-ci|§|§",
-            ]
-        )
+        mock_git_log = [
+            "3e7dc54|§OPS: My message: something|§|§",
+            "fabd2ab|§OPS: Update conventional commit version in python-ci|§|§",
+        ]
 
         with patch(self.GIT_LOG_METHOD_PATH, return_value=mock_git_log):
             release_notes = ReleaseNotesCompiler(
@@ -515,13 +435,11 @@ def test_commit_message_with_extra_colons_are_still_categorised(self):
 
     def test_commit_hash_merges_are_ignored(self):
         """Ensure commit messages that are just a merge of a commit ref into another commit ref are ignored."""
-        mock_git_log = "@@@\n".join(
-            [
-                "3e7dc54|§OPS: My message: something|§|§",
-                "fabd2ab|§Merge ef777290453f11b7519dbd3410b01d34d2e13566 into b043bc85cf558f1706188fafe9676ecd0642ab5a|§|§",
-                "ef77729|§OPS: Update conventional commit version in python-ci|§|§",
-            ]
-        )
+        mock_git_log = [
+            "3e7dc54|§OPS: My message: something|§|§",
+            "fabd2ab|§Merge ef777290453f11b7519dbd3410b01d34d2e13566 into b043bc85cf558f1706188fafe9676ecd0642ab5a|§|§",
+            "ef77729|§OPS: Update conventional commit version in python-ci|§|§",
+        ]
 
         with patch(self.GIT_LOG_METHOD_PATH, return_value=mock_git_log):
             release_notes = ReleaseNotesCompiler(
@@ -546,7 +464,7 @@ def test_single_breaking_change_is_indicated(self):
         """Test that a single breaking change is indicated in the release notes at the top and next to the categorised
         commit message.
         """
-        mock_git_log = "fabd2ab|§ENH: Make big change|§BREAKING CHANGE: blah blah blah|§@@@\n" + MOCK_GIT_LOG
+        mock_git_log = ["fabd2ab|§ENH: Make big change|§BREAKING CHANGE: blah blah blah|§"] + MOCK_GIT_LOG
 
         with patch(self.GIT_LOG_METHOD_PATH, return_value=mock_git_log):
             release_notes = ReleaseNotesCompiler(
@@ -579,11 +497,11 @@ def test_multiple_breaking_changes_are_indicated(self):
         """Test that multiple breaking changes are indicated in the release notes at the top and next to the categorised
         commit message.
         """
-        mock_git_log = (
-            "fabd2ab|§ENH: Make big change|§BREAKING-CHANGE: blah blah blah|§@@@\n"
-            "fabd2ab|§FIX: Make breaking fix|§BREAKING CHANGE: blob|§@@@\n"
-            "fabd2ab|§REF: Change interface|§BREAKING-CHANGE: glob|§@@@\n"
-        ) + MOCK_GIT_LOG
+        mock_git_log = [
+            "fabd2ab|§ENH: Make big change|§BREAKING-CHANGE: blah blah blah|§",
+            "fabd2ab|§FIX: Make breaking fix|§BREAKING CHANGE: blob|§",
+            "fabd2ab|§REF: Change interface|§BREAKING-CHANGE: glob|§",
+        ] + MOCK_GIT_LOG
 
         with patch(self.GIT_LOG_METHOD_PATH, return_value=mock_git_log):
             release_notes = ReleaseNotesCompiler(
@@ -618,7 +536,7 @@ def test_multiple_breaking_changes_are_indicated(self):
 
     def test_commit_messages_with_multi_line_bodies(self):
         """Test that commits with multi-line bodies work with the release notes compiler."""
-        mock_git_log = "fabd2ab|§ENH: Blah blah|§This is the body.\n Here is another body line|§@@@\n" + MOCK_GIT_LOG
+        mock_git_log = ["fabd2ab|§ENH: Blah blah|§This is the body.\n Here is another body line|§"] + MOCK_GIT_LOG
 
         with patch(self.GIT_LOG_METHOD_PATH, return_value=mock_git_log):
             release_notes = ReleaseNotesCompiler(
@@ -649,23 +567,29 @@ def test_include_link_to_pull_request(self):
         """Test that the HTML URL of the pull request is included in the release notes if requested."""
         html_url = "https://github.com/octue/conventional-commits/pull/40"
 
-        with patch(self.GIT_LOG_METHOD_PATH, return_value=MOCK_GIT_LOG):
-            with patch(
-                self.GET_CURRENT_PULL_REQUEST_PATH, return_value={"body": "", "number": 40, "html_url": html_url}
-            ):
-                release_notes = ReleaseNotesCompiler(
-                    stop_point="LAST_PULL_REQUEST",
-                    pull_request_url="https://api.github.com/repos/octue/conventional-commits/pulls/40",
-                    include_link_to_pull_request=True,
-                ).compile_release_notes()
+        with patch(
+            self.GET_CURRENT_PULL_REQUEST_PATH,
+            return_value={"body": "", "number": 40, "html_url": html_url, "commits": MOCK_PULL_REQUEST_COMMITS},
+        ):
+            release_notes = ReleaseNotesCompiler(
+                stop_point="PULL_REQUEST_START",
+                pull_request_url="https://api.github.com/repos/octue/conventional-commits/pulls/40",
+                include_link_to_pull_request=True,
+            ).compile_release_notes()
 
         expected = "\n".join(
             [
                 "<!--- START AUTOGENERATED NOTES --->",
                 "## Contents ([#40](https://github.com/octue/conventional-commits/pull/40))",
                 "",
-                "### Refactoring",
-                "- Merge commit message checker modules",
+                "### Enhancements",
+                "- Support getting versions from poetry and npm",
+                "",
+                "### Fixes",
+                "- Fix semantic version script; add missing config",
+                "",
+                "### Other",
+                "- Merge pull request #3 from octue/feature/add-other-conventional-commit-ci-components",
                 "",
                 "<!--- END AUTOGENERATED NOTES --->",
             ]
@@ -673,21 +597,47 @@ def test_include_link_to_pull_request(self):
 
         self.assertEqual(release_notes, expected)
 
-    def test_warning_raised_if_pull_request_is_not_accessible(self):
-        """Test that a warning is logged and the LAST_PULL_REQUEST stop point is used if the given pull request isn't
+    def test_last_release_stop_point_used_if_pull_request_is_not_accessible(self):
+        """Test that a warning is logged and the LAST_RELEASE stop point is used if the given pull request isn't
         accessible.
         """
         with patch(self.GIT_LOG_METHOD_PATH, return_value=MOCK_GIT_LOG):
             with patch("requests.get", return_value=Mock(status_code=404)):
                 with self.assertLogs() as logging_context:
-                    ReleaseNotesCompiler(
-                        stop_point="LAST_PULL_REQUEST",
+                    compiler = ReleaseNotesCompiler(
+                        stop_point="PULL_REQUEST_START",
                         pull_request_url="https://api.github.com/repos/octue/conventional-commits/pulls/40",
                         include_link_to_pull_request=True,
-                    ).compile_release_notes()
+                    )
 
                     self.assertEqual(logging_context.records[0].levelname, "WARNING")
-                    self.assertEqual(logging_context.records[1].message, "Using 'LAST_PULL_REQUEST' stop point.")
+                    self.assertEqual(logging_context.records[1].message, "Using 'LAST_RELEASE' stop point.")
+
+            compiler.compile_release_notes()
+
+        self.assertEqual(compiler.stop_point, "LAST_RELEASE")
+
+    def test_get_pull_request_with_api_token(self):
+        """Test that a pull request can be accessed using a GitHub API token."""
+        pull_request_url = "https://api.github.com/repos/octue/conventional-commits/pulls/40"
+
+        with patch(
+            "requests.get",
+            return_value=Mock(status_code=200, json=lambda: {"body": "blah", "commits_url": "https://url/to/commits"}),
+        ) as mock_get:
+            compiler = ReleaseNotesCompiler(
+                stop_point="PULL_REQUEST_START",
+                pull_request_url=pull_request_url,
+                api_token="blah",
+            )
+
+        # Check the pull request URL has been requested.
+        self.assertEqual(mock_get.call_args_list[0].args, (pull_request_url,))
+        self.assertEqual(mock_get.call_args_list[0].kwargs, {"headers": {"Authorization": "token blah"}})
+
+        # Check the commits URL has been requested and the returned JSON added to the pull request JSON.
+        self.assertEqual(mock_get.call_args_list[1].args, ("https://url/to/commits",))
+        self.assertIn("commits", compiler.current_pull_request)
 
 
 class TestMain(unittest.TestCase):