$ git clone -n https://src.fedoraproject.org/rpms/mimic.git /var/lib/mock/f40-build-780092-130672/root/chroot_tmpdir/scmroot/mimic
Cloning into '/var/lib/mock/f40-build-780092-130672/root/chroot_tmpdir/scmroot/mimic'...
$ git fetch origin 068fc1ccf3d138cfa1158e0bce9dec5861819e95:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mimic
 * [new ref]         068fc1ccf3d138cfa1158e0bce9dec5861819e95 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 068fc1c Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild