$ git clone -n https://src.fedoraproject.org/rpms/openttd.git /var/lib/mock/f45-build-21134-579/root/chroot_tmpdir/scmroot/openttd
Cloning into '/var/lib/mock/f45-build-21134-579/root/chroot_tmpdir/scmroot/openttd'...
$ git fetch origin f7e6ca034cbd9e788410c1b0fa08e2f11e057fa4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/openttd
 * [new ref]         f7e6ca034cbd9e788410c1b0fa08e2f11e057fa4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f7e6ca0 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild