Cloning this repository:

git clone git://gitorious.org/gnome-activity-journal/gnome-activity-journal.git gnome-activity-journal
cd gnome-activity-journal

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

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