Cloning this repository:

git clone git://gitorious.org/keepassx-maemo/keepassx-maemo.git keepassx-maemo
cd keepassx-maemo

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

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