Ensure you have enabled the workflow.
Go to your personal site and click the gear icon at left bottom corner.
Go to Traking Repos page
Add a repo name you want and click Add repo (e.g. pingcap/tidb).
Once you have added tracking repos, data pipeline will auto collect the tracking repos' data during next run. You can also manually trigger the workflow in your action page.
Usually a famous repository will take very long time at first run.