We use this as a secondary remote. Google's security model inside of a project means that you can grant accesses between select services without authentication.

We use this as a secondary remote. Google's security model inside of a project means that you can grant accesses between select services without authentication. E.g., we keep our main private repo at gihub, but when we want to auto-build a Docker image, push to the Google remote. Google's build trigger has been r/o granted access to the repo, clones the code, builds and publishes a private image.