この説明の中では gl-setup というのが不明。
pkg_info -D gitolite の表示では、以下の 5. が良く分らない
gitolite-admin は、まだ用意していないはず

To use gitolite, you will need to perform the following steps.

1. Create a new user/group, for example, git/git.

   On server,
        # groupadd git
        # useradd -m -g git git

2. login with new user git, create ssh public key, and copy public key
   file to user git's home directory on server.

        On server
        $ mkdir ~/.ssh
        $ chmod 700 ~/.ssh

        On client
        $ ssh-keygen -t rsa -f git
        $ scp ~/git.pub gitserver:~/

        On server
        $ chmod 600 ~/git.pub

3. Setup gitolite.

   On server,
        $ gitolite setup -pk git.pub

   And edit config file.

4. Setup ~/.ssh/config on client.
   Add the following lines.

        host gitserver
            user git
            hostname RealGitServerName
            port 22
            identityfile ~/.ssh/git

5. For administrative setting, please clone gitolite-admin repository.

        On client,
        $ git clone gitserver:gitolite-admin