[aditya3098]

#/bin/sh
GIT_LOOP="/mnt/us/extensions/git.img"
cd /mnt/us/extensions
function notifyUser(){
	#TODO
}
function mountGit() {
	mkdir -p /mnt/us/extensions/mountpoint-git
	mount -o loop $GIT_LOOP /mnt/us/extensions/mountpoint-git
	notifyUser "Mount success..."
}
function umountGit(){
	umount $GIT_LOOP
	notifyUser "Unmount success"
}
function updateExtensions() {
	for ext in ./*
	do
		cd "${ext}"
		/mnt/us/extensions/mountpoint-git/bin/git pull
		notifyUser "Successfully got ${ext} from git"
	done
}
mountGit
updateExtensions
umountGit

Stuff like that