$ git clone -n https://src.fedoraproject.org/rpms/mandoc.git /var/lib/mock/f40-build-796061-140458/root/chroot_tmpdir/scmroot/mandoc
Cloning into '/var/lib/mock/f40-build-796061-140458/root/chroot_tmpdir/scmroot/mandoc'...
$ git fetch origin 016b65e20a0988c631df2e8c0419d73c4502e5a9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mandoc
 * [new ref]         016b65e20a0988c631df2e8c0419d73c4502e5a9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 016b65e Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild