diff --git a/action.yml b/action.yml
index 3a9b49f..62de1ca 100644
--- a/action.yml
+++ b/action.yml
@@ -9,6 +9,7 @@ inputs:
       The branch, tag or SHA to checkout. When checking out the repository that
       triggered a workflow, this defaults to the reference or SHA for that
       event.  Otherwise, uses the default branch.
+    default: ${{ github.ref }}
   token:
     description: >
       Personal access token (PAT) used to fetch the repository. The PAT is configured