diff --git a/action.yml b/action.yml
index 87ed9d1..de04ba2 100644
--- a/action.yml
+++ b/action.yml
@@ -14,5 +14,5 @@ runs:
         set -x
         git remote add origin "$GITHUB_SERVER_URL/$GITHUB_REPOSITORY"
         git fetch --quiet origin "$GITHUB_REF"
-        git checkout "$GITHUB_REF_NAME"
+        git checkout FETCH_HEAD
       shell: bash