a fault in quick start

[drepig]

hi, I found this in quick start:
git clone https://github.com/apache/incubator-pinot.git cd incubator-pinot/thirdeye chmod +x install.sh run-frontend.sh run-backend.sh reset.sh ./install.sh

there is no thirdeye in incubator-pinot. So I git clone thirdeye directly.
I'd like to ask the relationships between incubator-pinto and thirdeye. And will the thirdeye be maintained?