Cloning this repository:

git clone git://gitorious.org/activerecord-basewithouttable-for-rails-2/mainline.git mainline
cd mainline

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

git remote add mainline git://gitorious.org/activerecord-basewithouttable-for-rails-2/mainline.git
git fetch mainline
git checkout -b my-local-tracking-branch mainline/master_or_other_branch

Cloning this repository:

git clone git://gitorious.org/~matej/activerecord-basewithouttable-for-rails-2/matejs-mainline.git matejs-mainline
cd matejs-mainline

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

git remote add matejs-mainline git://gitorious.org/~matej/activerecord-basewithouttable-for-rails-2/matejs-mainline.git
git fetch matejs-mainline
git checkout -b my-local-tracking-branch matejs-mainline/master_or_other_branch