$ git clone -n https://src.fedoraproject.org/rpms/gnuchess.git /var/lib/mock/f40-build-791826-137742/root/chroot_tmpdir/scmroot/gnuchess
Cloning into '/var/lib/mock/f40-build-791826-137742/root/chroot_tmpdir/scmroot/gnuchess'...
$ git fetch origin ad0ef8c44287fe204a0f60a97def904f27a4e61d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnuchess
 * [new ref]         ad0ef8c44287fe204a0f60a97def904f27a4e61d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ad0ef8c Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild