Fix UPDATED_REPO unbound var error on dev env tests

Signed-off-by: Sunnatillo <sunnat.samadov@est.tech>

jenkins/jobs/dev_env_integration_tests.pipeline

@@ -8,16 +8,17 @@ def CLEAN_TIMEOUT = 600
 def TIMEOUT = 7200
 
 script {
+  UPDATED_REPO = "https://github.com/${env.REPO_OWNER}/${env.REPO_NAME}.git"
+  echo "Test triggered from ${UPDATED_REPO}" 
+  ci_git_url = "https://github.com/metal3-io/project-infra.git"
+
   if ("${env.REPO_OWNER}" == "metal3-io" && "${env.REPO_NAME}" == "project-infra") {
-    echo "Checkout https://github.com/${env.REPO_OWNER}/${env.REPO_NAME}.git branch ${env.PULL_PULL_SHA}"
     ci_git_branch = (env.PULL_PULL_SHA) ?: "main"
-    ci_git_url = "https://github.com/${env.REPO_OWNER}/${env.REPO_NAME}.git"
     ci_git_base = (env.PULL_BASE_REF) ?: "main"
     // Fetch the base branch and the ci_git_branch when running on project-infra PR
     refspec = '+refs/heads/' + ci_git_base + ':refs/remotes/origin/' + ci_git_base + ' ' + ci_git_branch
   } else {
     ci_git_branch = "main"
-    ci_git_url = "https://github.com/metal3-io/project-infra.git"
     refspec = '+refs/heads/*:refs/remotes/origin/*'
   }
   agent_label="metal3ci-medium-${IMAGE_OS}"

jenkins/scripts/dynamic_worker_workflow/dev_env_integration_tests.sh

@@ -49,10 +49,23 @@ else
     export EPHEMERAL_CLUSTER="minikube"
 fi
 
+# Clone the source repository
 git clone "https://github.com/${REPO_ORG}/${REPO_NAME}.git" tested_repo
 cd tested_repo
 git checkout "${REPO_BRANCH}"
-cd ../
+# If the target and source repos and branches are identical, don't try to merge
+if [[ "${UPDATED_REPO}" != *"${REPO_ORG}/${REPO_NAME}"* ]] ||
+    [[ "${UPDATED_BRANCH}" != "${REPO_BRANCH}" ]]; then
+    git config user.email "test@test.test"
+    git config user.name "Test"
+    git remote add test "${UPDATED_REPO}"
+    git fetch test
+    if [[ -n "${PR_ID:-}" ]]; then
+        git fetch origin "pull/${PR_ID}/head:${UPDATED_BRANCH}-branch" || true
+    fi
+    # Merging the PR with the target branch
+    git merge "${UPDATED_BRANCH}" || exit
+fi
 
 if [[ "${REPO_NAME}" == "metal3-dev-env" ]]; then
     # it will already be cloned to tested_repo