diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index fd2037f194..41c260928e 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -32,6 +32,8 @@ jobs:
           --health-retries 5
     steps:
     - uses: actions/checkout@v2
+      with:
+        ref: ${{ github.head_ref }}
     - name: Use Node.js ${{ matrix.node-version }}
       uses: actions/setup-node@v1
       with: