From mboxrd@z Thu Jan  1 00:00:00 1970
From: Darxus@chaosreigns.com
Subject: git clone --update ?
Date: Fri, 7 Jan 2011 17:54:05 -0500
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I'm working on a build script that pulls source from 12 git repos:
http://www.chaosreigns.com/wayland/wayland-build-ubuntu-all.sh

I would like to be able to do the equivalent of:

 rm -rf gtk+; git clone git://git.gnome.org/gtk+ --branch gdk-backend-wayland

Without re-downloading the entire thing.  Even if I made any kind of
modifications to the repo.

One suggestion I've gotten was;

  git checkout gdk-backend-wayland && git fetch git://git.gnome.org/gtk+ gdk-backend-wayland && git reset --hard FETCH_HEAD && git clean -fxd

Possibly replacing the branch name with HEAD if I want the default branch.

It would be nice if, instead, I could just run something like:

  git clone --update git://git.gnome.org/gtk+ --branch gdk-backend-wayland

Bonus points for working if I have not already cloned it.