diff --git a/.github/workflows/submodule-pin-check.sh b/.github/workflows/submodule-pin-check.sh
index 0bcc925093..ffabedf156 100755
--- a/.github/workflows/submodule-pin-check.sh
+++ b/.github/workflows/submodule-pin-check.sh
@@ -15,6 +15,7 @@ for mod in `git submodule --quiet foreach 'echo $name'`; do
 
 	if ! git -C $mod merge-base --is-ancestor HEAD $branch; then
 		echo $mod diverges from $branch
+		git -C $mod branch -a
 		divergent=1
 	fi
 done