Cloning this repository:

git clone git://gitorious.org/~elf-pavlik/crabgrass/elf-pavliks-crabgrass.git elf-pavliks-crabgrass
cd elf-pavliks-crabgrass

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

git remote add elf-pavliks-crabgrass git://gitorious.org/~elf-pavlik/crabgrass/elf-pavliks-crabgrass.git
git fetch elf-pavliks-crabgrass
git checkout -b my-local-tracking-branch elf-pavliks-crabgrass/master_or_other_branch