$ git clone -n https://src.fedoraproject.org/rpms/mm-common.git /var/lib/mock/f40-build-2011650-45728/root/chroot_tmpdir/scmroot/mm-common
Cloning into '/var/lib/mock/f40-build-2011650-45728/root/chroot_tmpdir/scmroot/mm-common'...
$ git fetch origin 6216c06797ee88dd2c2e651c854c4ce89904368b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mm-common
 * [new ref]         6216c06797ee88dd2c2e651c854c4ce89904368b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6216c06 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild