$ git clone -n https://src.fedoraproject.org/rpms/knotes.git /var/lib/mock/f39-build-1545513-36691/root/chroot_tmpdir/scmroot/knotes
Cloning into '/var/lib/mock/f39-build-1545513-36691/root/chroot_tmpdir/scmroot/knotes'...
$ git fetch origin 6d2b34e60fcdfb0a663bf6f1832776324603713c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/knotes
 * [new ref]         6d2b34e60fcdfb0a663bf6f1832776324603713c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6d2b34e 23.08.2