$ git clone -n https://src.fedoraproject.org/rpms/kf6-kdbusaddons.git /var/lib/mock/f38-build-side-42-init-devel-1413552-31434/root/chroot_tmpdir/scmroot/kf6-kdbusaddons
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1413552-31434/root/chroot_tmpdir/scmroot/kf6-kdbusaddons'...
$ git fetch origin ce18263e57877a15186e3ff048e836fefcccbe80:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kdbusaddons
 * [new ref]         ce18263e57877a15186e3ff048e836fefcccbe80 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ce18263 Added the README