Update Actions: Source branch name

.github/workflows/Build.yml

@@ -23,10 +23,15 @@ jobs:
         with:
           node-version: '22'
 
+      - name: Extract branch name
+        shell: bash
+        run: echo "branch=${GITHUB_HEAD_REF:-${GITHUB_REF#refs/heads/}}" >> $GITHUB_OUTPUT
+        id: extract_branch
+
       # Initialize build branch
       - name: Initialize build branch
         run: |
-          SOURCE_BRANCH_NAME=$(echo ${GITHUB_REF#refs/heads/})
+          SOURCE_BRANCH_NAME=${{ steps.extract_branch.outputs.branch }}
           git config --global user.name 'Git Workflow Bot'
           git config --global user.email 'noreply@kozelkaricsi.hu'
           git fetch --all --unshallow