$ git clone -n https://src.fedoraproject.org/rpms/ebtables.git /var/lib/mock/f45-build-7979-372/root/chroot_tmpdir/scmroot/ebtables
Cloning into '/var/lib/mock/f45-build-7979-372/root/chroot_tmpdir/scmroot/ebtables'...
$ git fetch origin ca50b6408f0c1dc0ab20d2ad63f31277f35fab8f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ebtables
 * [new ref]         ca50b6408f0c1dc0ab20d2ad63f31277f35fab8f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ca50b64 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild