diff --git a/.github/actions/init-g4w-sdk-for-pacman/action.yml b/.github/actions/init-g4w-sdk-for-pacman/action.yml
index 48649160..b8894b02 100644
--- a/.github/actions/init-g4w-sdk-for-pacman/action.yml
+++ b/.github/actions/init-g4w-sdk-for-pacman/action.yml
@@ -36,6 +36,7 @@ runs:
       env:
         GIT_CONFIG_PARAMETERS: "'checkout.workers=56'"
       run: |
+        set -ex &&
         git -C .tmp config extensions.worktreeConfig true &&
         git -C .tmp worktree add --no-checkout --detach "$PWD/.sdk" &&
         cd .sdk &&