$ git clone -n https://src.fedoraproject.org/rpms/kmbox.git /var/lib/mock/f40-build-2691563-68143/root/chroot_tmpdir/scmroot/kmbox
Cloning into '/var/lib/mock/f40-build-2691563-68143/root/chroot_tmpdir/scmroot/kmbox'...
$ git fetch origin b34787910fcc0f64f1f5baa9793aaacf8135edb3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kmbox
 * [new ref]         b34787910fcc0f64f1f5baa9793aaacf8135edb3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b347879 24.02.1