diff --git a/.github/workflows/tf-plan.yml b/.github/workflows/tf-plan.yml
index 484ee54..307b79d 100644
--- a/.github/workflows/tf-plan.yml
+++ b/.github/workflows/tf-plan.yml
@@ -51,7 +51,7 @@ jobs:
 
       - uses: actions/checkout@v6
         with:
-          ref: ${{ github.ref }}
+          ref: ${{ github.head_ref || github.ref }}
 
       - uses: hashicorp/setup-terraform@v4
         with: