$ git clone -n https://src.fedoraproject.org/rpms/xboard.git /var/lib/mock/f40-build-2332907-59184/root/chroot_tmpdir/scmroot/xboard
Cloning into '/var/lib/mock/f40-build-2332907-59184/root/chroot_tmpdir/scmroot/xboard'...
$ git fetch origin 7168df7a2e69061cea2a3edf81e8e5e4d923d809:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xboard
 * [new ref]         7168df7a2e69061cea2a3edf81e8e5e4d923d809 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7168df7 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild