$ git clone -n https://src.fedoraproject.org/rpms/mktorrent.git /var/lib/mock/f40-build-795153-139928/root/chroot_tmpdir/scmroot/mktorrent
Cloning into '/var/lib/mock/f40-build-795153-139928/root/chroot_tmpdir/scmroot/mktorrent'...
$ git fetch origin 3f2a2d4f670f705fbbad72e50c22eebed0530520:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mktorrent
 * [new ref]         3f2a2d4f670f705fbbad72e50c22eebed0530520 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3f2a2d4 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild