$ git clone -n https://src.fedoraproject.org/rpms/knotes.git /var/lib/mock/f39-build-2153139-50912/root/chroot_tmpdir/scmroot/knotes
Cloning into '/var/lib/mock/f39-build-2153139-50912/root/chroot_tmpdir/scmroot/knotes'...
$ git fetch origin 09938b5f119066b71517d27492bcb14aff19c4e4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/knotes
 * [new ref]         09938b5f119066b71517d27492bcb14aff19c4e4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 09938b5 23.08.4