Cloning this repository:

git clone git://gitorious.org/haiku-webkit-port/haiku-webkit-port.git haiku-webkit-port
cd haiku-webkit-port

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

git remote add haiku-webkit-port git://gitorious.org/haiku-webkit-port/haiku-webkit-port.git
git fetch haiku-webkit-port
git checkout -b my-local-tracking-branch haiku-webkit-port/master_or_other_branch