https://github.com/tektoncd/operator/blob/main/docs/TektonHub.md
https://tekton.dev/docs/operator/tektonhub/

1. create a GitHub app
2. update secret "tekton-hub-api" in ns openshift-pipelines - GH_CLIENT_ID, GH_CLIENT_SECRET, JWT_SIGNING_KEY=foo, ACCESS_JWT_EXPIRES_IN=24h, REFRESH_JWT_EXPIRES_IN=48h
3. if running on a cluster with self-signed certificate, grant an exception in your browser for all 3 URLs - api, ui and auth
4. click login in top-right corner and grade some of the tasks