Cloning this repository:

git clone git://gitorious.org/bittr-client/bittr-client.git bittr-client
cd bittr-client

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

git remote add bittr-client git://gitorious.org/bittr-client/bittr-client.git
git fetch bittr-client
git checkout -b my-local-tracking-branch bittr-client/master_or_other_branch