diff --git a/.github/workflows/tapioca.yml b/.github/workflows/tapioca.yml
index f883c94c53..6583afbab4 100644
--- a/.github/workflows/tapioca.yml
+++ b/.github/workflows/tapioca.yml
@@ -42,7 +42,7 @@ jobs:
           git checkout -B tapioca-update
           git reset origin/master
           git add sorbet
-          if ! git --no-patch --exit-code HEAD -- sorbet; then
+          if ! git diff --no-patch --exit-code HEAD -- sorbet; then
             if ! git ls-remote --exit-code --heads origin tapioca-update; then
               git commit -m "sorbet: update RBI files using Tapioca." -m "Autogenerated by [a scheduled GitHub Action](https://github.com/Homebrew/brew/blob/master/.github/workflows/tapioca.yml)."
               echo "::set-output name=committed::true"