$ git clone -n https://src.fedoraproject.org/rpms/postgresql-plruby.git /var/lib/mock/f29-build-7153-1762/root/thebuilddir/tmp/scmroot/postgresql-plruby
Cloning into '/var/lib/mock/f29-build-7153-1762/root/thebuilddir/tmp/scmroot/postgresql-plruby'...
$ git reset --hard 05cb71ac8194c095c580aa48c632c664084da76d
HEAD is now at 05cb71a - Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild