diff --git a/.github/workflows/38-get-pr-number-on-push-event.yml b/.github/workflows/38-get-pr-number-on-push-event.yml
index 3952eaa5f5..b8be16b6e2 100644
--- a/.github/workflows/38-get-pr-number-on-push-event.yml
+++ b/.github/workflows/38-get-pr-number-on-push-event.yml
@@ -7,6 +7,9 @@ jobs:
     runs-on: ubuntu-latest
     if: ${{ github.event_name == 'push' }}
     steps:
+      - uses: actions/checkout@2.3.4
+        with:
+          fetch-depth: 0
       - name: Get Pull Request Number
         id: pr
         run: echo "::set-output name=pull_request_number::$(gh pr view --json number -q .number || echo "")"