$ git clone -n git://pkgs.fedoraproject.org/rpms/0xFFFF /var/lib/mock/f29-build-4748-1125/root/thebuilddir/tmp/scmroot/0xFFFF
Cloning into '/var/lib/mock/f29-build-4748-1125/root/thebuilddir/tmp/scmroot/0xFFFF'...
$ git reset --hard 1523b9a6cb75a38ba022257e33c84fdbfb0e6048
HEAD is now at 1523b9a - Rebuilt for https://fedoraproject.org/wiki/Fedora_26_Mass_Rebuild