$ git clone -n https://src.fedoraproject.org/rpms/mcstrans.git /var/lib/mock/f40-build-2297106-56440/root/chroot_tmpdir/scmroot/mcstrans
Cloning into '/var/lib/mock/f40-build-2297106-56440/root/chroot_tmpdir/scmroot/mcstrans'...
$ git fetch origin 7c355536e394e03dd8b76d94716beb78001440d0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mcstrans
 * [new ref]         7c355536e394e03dd8b76d94716beb78001440d0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7c35553 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild