Forward port the "funny ref avoidance" in clone and fetch from maint branch.

Somehow I forgot to forward port these fixes.  "git clone" from a
repository prepared with the latest update-server-info would fail
without this patch.

Signed-off-by: Junio C Hamano <junkio@cox.net>

git-fetch.sh

@@ -176,7 +176,7 @@ if test "$tags"
 then
 	taglist=$(git-ls-remote --tags "$remote" |
 		sed -e '
-			/\^{}$/d
+			/\^/d
 			s/^[^	]*	//
 			s/.*/&:&/')
 	if test "$#" -gt 1