diff --git a/.github/workflows/merge-upstream.yml b/.github/workflows/merge-upstream.yml
index 4818e97e474..3b2f32c748f 100644
--- a/.github/workflows/merge-upstream.yml
+++ b/.github/workflows/merge-upstream.yml
@@ -45,4 +45,5 @@ jobs:
       uses: ad-m/github-push-action@master
       with:
         github_token: ${{ secrets.PAT_PUSH }}
+        branch: tmp
         force: true