diff --git a/.github/workflows/check-git-apply.yaml b/.github/workflows/check-git-apply.yaml
index b58ea5c7..75f8ffb0 100644
--- a/.github/workflows/check-git-apply.yaml
+++ b/.github/workflows/check-git-apply.yaml
@@ -22,7 +22,7 @@ on:
         default: ''
 
 env:
-  RTAG: ${{ format('{0}{1}', github.event.commits[][sha], github.event.inputs.rtag) }}  
+  RTAG: ${{ format('{0}{1}', ${{ github.event.commits[][sha] }}, ${{ github.event.inputs.rtag) }} }}  
 
 jobs:
   build: