$ git clone -n https://src.fedoraproject.org/rpms/python-prettytable.git /var/lib/mock/f40-build-1269248-23096/root/chroot_tmpdir/scmroot/python-prettytable
Cloning into '/var/lib/mock/f40-build-1269248-23096/root/chroot_tmpdir/scmroot/python-prettytable'...
$ git fetch origin 074d56d27c0e2a01f406de673de4851476c0ef59:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-prettytable
 * [new ref]         074d56d27c0e2a01f406de673de4851476c0ef59 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 074d56d Add source