$ git clone -n https://src.fedoraproject.org/rpms/mythes-mi.git /var/lib/mock/f40-build-2012345-45783/root/chroot_tmpdir/scmroot/mythes-mi
Cloning into '/var/lib/mock/f40-build-2012345-45783/root/chroot_tmpdir/scmroot/mythes-mi'...
$ git fetch origin 4541f1e27a8c16b7196e17ceb20a0aaa6fa07e4d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mythes-mi
 * [new ref]         4541f1e27a8c16b7196e17ceb20a0aaa6fa07e4d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4541f1e Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild