fix(ci): Make sure to checkout the PR branch before pushing the diff generated from the pre-commit hooks

Context: https://github.com/redhat-developer/rhdh-operator/actions/runs/17475391158/job/49670949036?pr=1584

Author: rm3l

.github/workflows/pre-commit.yaml

@@ -21,7 +21,7 @@ jobs:
     # see list of approvers in OWNERS file
     environment:
       ${{ (github.event.pull_request.head.repo.full_name == github.repository ||
-      contains(fromJSON('["coreydaley","gazarenkov","kadel","nickboldt","rm3l","kim-tsao","Fortune-Ndlovu","subhashkhileri","zdrapela","openshift-cherrypick-robot", "Fortune-Ndlovu", "subhashkhileri", "zdrapela"]'), github.event.pull_request.user.login)) && 'internal' || 'external' }}
+      contains(fromJSON('["gazarenkov","kadel","nickboldt","rm3l","kim-tsao","Fortune-Ndlovu","subhashkhileri","zdrapela","openshift-cherrypick-robot"]'), github.event.pull_request.user.login)) && 'internal' || 'external' }}
     runs-on: ubuntu-latest
     steps:
       - name: approved
@@ -66,18 +66,22 @@ jobs:
         run: |
           echo "CHANGED=$(if git diff --quiet; then echo "false"; else echo "true"; fi)" >> $GITHUB_OUTPUT
 
-      - name: Commit any changes
+      - name: Commit and push any manifest changes
         if: ${{ steps.diff-checker.outputs.CHANGED == 'true' }}
         run: |
+          git remote add fork "https://github.com/${{ github.event.pull_request.head.repo.full_name }}.git"
+          git fetch fork ${{ github.event.pull_request.head.ref }}
+          git checkout -B pr-branch fork/${{ github.event.pull_request.head.ref }}
+
           git config user.name 'github-actions[bot]'
           git config user.email 'github-actions[bot]@users.noreply.github.com'
-          git fetch --prune
-          git pull --rebase --autostash
+
           git add -A .
           git commit \
             -m "chore(pre-commit): Auto-fix hooks" \
             -m "Co-authored-by: $GITHUB_ACTOR <$GITHUB_ACTOR@users.noreply.github.com>"
-          git push
+
+          git push fork pr-branch:${{ github.event.pull_request.head.ref }}
 
       - name: Comment on PR if manifests were updated
         uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8