$ git clone -n https://src.fedoraproject.org/rpms/libnss-pgsql.git /var/lib/mock/f31-build-59190-28552/root/chroot_tmpdir/scmroot/libnss-pgsql
Cloning into '/var/lib/mock/f31-build-59190-28552/root/chroot_tmpdir/scmroot/libnss-pgsql'...
$ git reset --hard b91820330b9d893a5b551cb43e244f2efd4849b5
HEAD is now at b918203 - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild