$ git clone -n https://src.fedoraproject.org/rpms/kf5-kmailtransport.git /var/lib/mock/f38-build-716438-96033/root/chroot_tmpdir/scmroot/kf5-kmailtransport
Cloning into '/var/lib/mock/f38-build-716438-96033/root/chroot_tmpdir/scmroot/kf5-kmailtransport'...
$ git fetch origin 20f976f8922f307ba698204f1cfb79a3281db8c3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-kmailtransport
 * [new ref]         20f976f8922f307ba698204f1cfb79a3281db8c3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 20f976f 23.04.1