$ git clone -n https://src.fedoraproject.org/rpms/ktimer.git /var/lib/mock/f42-build-863687-171731/root/chroot_tmpdir/scmroot/ktimer
Cloning into '/var/lib/mock/f42-build-863687-171731/root/chroot_tmpdir/scmroot/ktimer'...
$ git fetch origin 6666fce1c040ae52db086977f0811febbf90ee4a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ktimer
 * [new ref]         6666fce1c040ae52db086977f0811febbf90ee4a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6666fce 24.12.0