request-pull: allow ls-remote to notice remote.$nickname.uploadpack

The location to pull from should be converted from the configured nickname
to URL in the message, but ls-remote should be fed the nickname so that
the command uses remote.$nickname.* variables, most notably "uploadpack".

Signed-off-by: Tom Grennan <tgrennan@redback.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

git-request-pull.sh

@@ -28,13 +28,13 @@ headrev=`git rev-parse --verify "$head"^0` || exit
 merge_base=`git merge-base $baserev $headrev` ||
 die "fatal: No commits in common between $base and $head"
 
-url=$(get_remote_url "$url")
 branch=$(git ls-remote "$url" \
 	| sed -n -e "/^$headrev	refs.heads./{
 		s/^.*	refs.heads.//
 		p
 		q
 	}")
+url=$(get_remote_url "$url")
 if [ -z "$branch" ]; then
 	echo "warn: No branch of $url is at:" >&2
 	git log --max-count=1 --pretty='tformat:warn:   %h: %s' $headrev >&2