$ git clone -n https://src.fedoraproject.org/rpms/openttd-opengfx.git /var/lib/mock/f45-build-21133-579/root/chroot_tmpdir/scmroot/openttd-opengfx
Cloning into '/var/lib/mock/f45-build-21133-579/root/chroot_tmpdir/scmroot/openttd-opengfx'...
$ git fetch origin 99c20f2b67cd64df3fd3c453dd568e65d39580f1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/openttd-opengfx
 * [new ref]         99c20f2b67cd64df3fd3c453dd568e65d39580f1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 99c20f2 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild