Make `vcsh clone` handle empty remotes gracefully

TODO

-* vcsh clone fails when remote is empty
-
 # Related #
 
 * Package for Debian

vcsh

@@ -64,6 +64,10 @@ clone() {
 	git remote add origin "$GIT_REMOTE"
 	git config branch.master.remote origin
 	git config branch.master.merge  refs/heads/master
+	if [ -z $(git ls-remote 2> /dev/null) ]; then
+		info "remote is empty, not merging anything"
+		exit
+	fi
 	git fetch
 	for object in $(git ls-tree -r origin/master | awk '{print $4}'); do
 		[ -e "$object" ] &&