$ git clone -n https://src.fedoraproject.org/rpms/newscache.git /var/lib/mock/f31-build-57572-28366/root/thebuilddir/tmp/scmroot/newscache
Cloning into '/var/lib/mock/f31-build-57572-28366/root/thebuilddir/tmp/scmroot/newscache'...
$ git reset --hard c065a2730de3f38a7ffb923c0aaf0b069beb99d9
HEAD is now at c065a27 - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild