diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index e529692dd7..308f4c7a87 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -51,7 +51,7 @@ jobs:
       - uses: actions/checkout@v3
         with:
           # https://github.com/actions/checkout/issues/881
-          ref: ${{ github.event_name == 'pull_request' && github.event.pull_request.head.sha || github.sha }}
+          ref: ${{ github.event_name == 'pull_request' && github.event.pull_request.head.sha || github.ref }}
       - name: Configure gradle
         uses: gradle/gradle-build-action@v2
         with: