diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0aa8189..da22ccd 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -11,7 +11,7 @@ jobs:
     steps:
       - uses: actions/checkout@v2
         with:
-          ref: ${GITHUB_REF##*/}
+          ref: ${{ github.head_ref }}
       - uses: actions/setup-node@v2-beta
         with:
           node-version: '12'