$ git clone -n https://src.fedoraproject.org/rpms/calamares.git /var/lib/mock/f42-bootstrap-3533742-46421/root/chroot_tmpdir/scmroot/calamares
Cloning into '/var/lib/mock/f42-bootstrap-3533742-46421/root/chroot_tmpdir/scmroot/calamares'...
$ git fetch origin f2f713a08fc87f870774efb429c1e52e6b61f713:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/calamares
 * [new ref]         f2f713a08fc87f870774efb429c1e52e6b61f713 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f2f713a Update to 3.3.14