$ git clone -n https://src.fedoraproject.org/rpms/diff-so-fancy.git /var/lib/mock/f40-build-2686632-68067/root/chroot_tmpdir/scmroot/diff-so-fancy
Cloning into '/var/lib/mock/f40-build-2686632-68067/root/chroot_tmpdir/scmroot/diff-so-fancy'...
$ git fetch origin c5237bb6c4f026aaf35eaa8cde72784472e025c3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/diff-so-fancy
 * [new ref]         c5237bb6c4f026aaf35eaa8cde72784472e025c3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c5237bb Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild