Add branch to git-auto-commit-action step

.github/workflows/ci.yml

@@ -17,7 +17,7 @@ jobs:
       - name: Checkout project
         uses: actions/checkout@v2
       - name: Label PR
-        if:   github.event_name == 'pull_request'
+        if: github.event_name == 'pull_request'
         uses: TimonVS/pr-labeler-action@v3
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -30,12 +30,13 @@ jobs:
       - name: Run pre-conditions
         run: test -f .github/actions.yml && eval "$(yq r .github/actions.yml -D "true" pre.ci)" || true
       - name: Run scalafmt on Scala Steward PRs
-        if:  github.event.pull_request.user.login == '47erbot' && contains(github.event.pull_request.body, 'Scala Steward')
+        if: github.event.pull_request.user.login == '47erbot' && contains(github.event.pull_request.body, 'Scala Steward')
         run: sbt "scalafixEnable; fix" || sbt "scalafmtAll; scalafmtSbt" || true
       - name: Push changes
         uses: stefanzweifel/git-auto-commit-action@v4.1.3
         with:
           commit_message: Run formatter/linter
+          branch: ${{ github.head_ref }}
       - name: Run checks
         run: sbt ci-test
         env: