From 792b7301351df20256d4bb88110d3bc6ce4513f6 Mon Sep 17 00:00:00 2001
From: Matthew Gabeler-Lee <cheetah@fastcat.org>
Date: Wed, 13 Feb 2013 20:16:18 -0500
Subject: [PATCH] Ask git server what head revision is before downloading the
 repo

---
 rpi-update | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/rpi-update b/rpi-update
index 0eddcde..c1ceef6 100755
--- a/rpi-update
+++ b/rpi-update
@@ -197,11 +197,14 @@ if [[ ${FW_REV} != "" ]]; then
 	download_rev
 	do_update "updated to revision ${FW_REV}"
 elif [[ -f "${FW_REPOLOCAL}/.git/config" ]]; then
-	update_repo
-	if [[ -f "${FW_PATH}/.firmware_revision" ]] && [[ $(cat "${FW_PATH}/.firmware_revision") == $(eval ${GITCMD} rev-parse master) ]]; then
+	# ask git server version before spending time cloning
+	GITREV=$(git ls-remote -h ${REPO_URI} refs/heads/master | awk '{print $1}')
+	if [[ -f "${FW_PATH}/.firmware_revision" ]] && [[ $(cat "${FW_PATH}/.firmware_revision") == "$GITREV" ]]; then
 		echo " *** Your firmware is already up to date"
-		finalise
+		# no changes made, nothing to finalise
+		# finalise
 	else
+		update_repo
 		do_update "updated"
 	fi
 else