Cloning this repository:

git clone git://gitorious.org/openembedded/openembedded.git openembedded
cd openembedded

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

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