Teach "git-read-tree -u" to check out submodules as a directory

diff --git a/git-clean.sh b/git-clean.sh
index 071b974f496b8deff3a2d1b869c35d4f556dc17f..db177a7886b6407b4c4ad7b778a1ae99471355ac 100755 (executable)
--- a/git-clean.sh
+++ b/git-clean.sh
@@ -14,6 +14,7 @@ When optional <paths>... arguments are given, the paths
 affected are further limited to those that match them.'
 SUBDIRECTORY_OK=Yes
 . git-sh-setup
+require_work_tree
 
 ignored=
 ignoredonly=