Cloning this repository:

git clone git://gitorious.org/0xdroid/packages_apps_amberlauncher.git packages_apps_amberlauncher
cd packages_apps_amberlauncher

Add this repository as a remote to an existing local repository:

git remote add packages_apps_amberlauncher git://gitorious.org/0xdroid/packages_apps_amberlauncher.git
git fetch packages_apps_amberlauncher
git checkout -b my-local-tracking-branch packages_apps_amberlauncher/master_or_other_branch