$ git clone -n https://src.fedoraproject.org/rpms/kf6-sonnet.git /var/lib/mock/f42-build-side-1-3537093-46559/root/chroot_tmpdir/scmroot/kf6-sonnet
Cloning into '/var/lib/mock/f42-build-side-1-3537093-46559/root/chroot_tmpdir/scmroot/kf6-sonnet'...
$ git fetch origin 587f5be9d95201ed1148f131e807480bd1217684:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-sonnet
 * [new ref]         587f5be9d95201ed1148f131e807480bd1217684 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 587f5be 6.14.0