Revert "Fixes broken test with shallow git clone"

This reverts commit fb5ab4e.

CIME/tests/test_unit_bless_test_results.py

@@ -798,21 +798,13 @@ def test_baseline_root_none(self, get_test_status_files, TestStatus, Case):
 
         assert not success
 
-    @mock.patch("CIME.utils.get_current_branch")
     @mock.patch("CIME.bless_test_results.bless_namelists")
     @mock.patch("CIME.bless_test_results.Case")
     @mock.patch("CIME.bless_test_results.TestStatus")
     @mock.patch("CIME.bless_test_results.get_test_status_files")
     def test_baseline_name_none(
-        self,
-        get_test_status_files,
-        TestStatus,
-        Case,
-        bless_namelists,
-        get_current_branch,
+        self, get_test_status_files, TestStatus, Case, bless_namelists
     ):
-        get_current_branch.return_value = "master"
-
         bless_namelists.return_value = (True, "")
 
         get_test_status_files.return_value = [
@@ -827,7 +819,6 @@ def test_baseline_name_none(
         case = Case.return_value.__enter__.return_value
         case.get_value.side_effect = [None, None]
 
-        breakpoint()
         success = bless_test_results(
             None,
             "/tmp/baselines",