Teach fast-import how to clear the internal branch content.

diff --git a/git-am.sh b/git-am.sh
index 59d663ba9e0c3828d11b442c6fd9536a87d937cb..1252f26bbd46484f25e58e92680e553f7fd7c1da 100755 (executable)
--- a/git-am.sh
+++ b/git-am.sh
@@ -7,6 +7,7 @@ USAGE='[--signoff] [--dotest=<dir>] [--utf8 | --no-utf8] [--binary] [--3way]
   or, when resuming [--skip | --resolved]'
 . git-sh-setup
 set_reflog_action am
+require_work_tree
 
 git var GIT_COMMITTER_IDENT >/dev/null || exit