Cloning this repository:

git clone git://gitorious.org/~bilbo-the-hobbit/fusioninventory/bilbo-the-hobbits-fusioninventory-for-glpi.git bilbo-the-hobbits-fusioninventory-for-glpi
cd bilbo-the-hobbits-fusioninventory-for-glpi

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

git remote add bilbo-the-hobbits-fusioninventory-for-glpi git://gitorious.org/~bilbo-the-hobbit/fusioninventory/bilbo-the-hobbits-fusioninventory-for-glpi.git
git fetch bilbo-the-hobbits-fusioninventory-for-glpi
git checkout -b my-local-tracking-branch bilbo-the-hobbits-fusioninventory-for-glpi/master_or_other_branch