diff --git a/.github/workflows/pull-request.yml b/.github/workflows/pull-request.yml
index df23c18..8f82495 100644
--- a/.github/workflows/pull-request.yml
+++ b/.github/workflows/pull-request.yml
@@ -11,7 +11,8 @@ jobs:
   pull-request:
     runs-on: ubuntu-latest
     steps:
+    - uses: actions/checkout@v4
     - name: create pull request
-      run: gh pr create -B main -H ${{ github.ref }} --title 'Merge ${{ github.ref }} into main' --body 'Created by Github action'
+      run: gh pr create -B main -H ${{ github.ref_name }} --title 'Merge ${{ github.ref_name }} into main' --body 'Created by Github action'
       env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}