debug: Move step back after checkout, with fetch all

.github/workflows/seo-report.yaml

@@ -20,16 +20,6 @@ jobs:
       url: https://${{ github.repository_owner }}.github.io/${{ github.head_ref }}/
     runs-on: ubuntu-latest
     steps:
-      - name: Get Deployment Source Branch Name
-        id: git-branch
-        run: |
-          git branch -a --contains ${{ github.event.deployment.ref }}
-          source_branches="$(git branch -a --contains ${{ github.event.deployment.ref }})"
-          result=$(echo "$source_branches" | tail -n1 | sed 's/^[ \t]*//')
-          echo "Remote source of deployment: ${result}"
-          echo "Local git ref of deployment: ${result#remotes/origin/*}"
-          echo "SOURCE_REF=${result#remotes/origin/*}" >> "$GITHUB_OUTPUT"
-
       - name: Check out
         uses: actions/checkout@v3
 
@@ -41,6 +31,17 @@ jobs:
       - name: Install Dependencies
         run: yarn global add @unlighthouse/cli puppeteer
 
+      - name: Get Deployment Source Branch Name
+        id: git-branch
+        run: |
+           git fetch --all
+           git branch -a --contains ${{ github.event.deployment.ref }}
+           source_branches="$(git branch -a --contains ${{ github.event.deployment.ref }})"
+           result=$(echo "$source_branches" | tail -n1 | sed 's/^[ \t]*//')
+           echo "Remote source of deployment: ${result}"
+           echo "Local git ref of deployment: ${result#remotes/origin/*}"
+           echo "SOURCE_REF=${result#remotes/origin/*}" >> "$GITHUB_OUTPUT"
+
       - name: Build Unlighthouse report
         run: |
           unlighthouse-ci \