Cloning this repository:

git clone git://gitorious.org/webos-internals/usbnet-pre.git usbnet-pre
cd usbnet-pre

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

git remote add usbnet-pre git://gitorious.org/webos-internals/usbnet-pre.git
git fetch usbnet-pre
git checkout -b my-local-tracking-branch usbnet-pre/master_or_other_branch