HXOR-193 in the pull-request flow, branch name in the flag parser should be managed better (#8405)

* Changed a structure

* Added $

* Added missing )

* [ci:force]

.github/workflows/pull-request.yml

@@ -108,6 +108,9 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v3
 
+      - name: Get branch name
+        uses: Alfresco/alfresco-build-tools/.github/actions/get-branch-name@v1.36.0
+
       - name: ci:force flag parser
         shell: bash
         run: |
@@ -116,7 +119,8 @@ jobs:
               exit 0
           else
             git fetch --all
-            message=$(git log --format=%B -n 1 origin/${{ github.head_ref }})
+            echo "$BRANCH_NAME"
+            message=$(git log --format=%B -n 1 origin/$BRANCH_NAME)
             echo "COMMIT_MESSAGE=$message" >> $GITHUB_ENV
             export COMMIT_MESSAGE=$message
             if [[ "$COMMIT_MESSAGE" == *"[ci:force]"* ]]; then