$ git clone -n https://src.fedoraproject.org/rpms/freerouting.git /var/lib/mock/f45-build-9251-400/root/chroot_tmpdir/scmroot/freerouting
Cloning into '/var/lib/mock/f45-build-9251-400/root/chroot_tmpdir/scmroot/freerouting'...
$ git fetch origin 512a9ff23e12f58d468c70506fb75772b7444233:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/freerouting
 * [new ref]         512a9ff23e12f58d468c70506fb75772b7444233 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 512a9ff Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild