We want to ingest all Git repositories of the Eclipse foundation (and they want us to do that too!).
They are using cgit, and the full repo listing is here: https://git.eclipse.org/c/
It also comes with a "idle" column, which is a good substitute for an actual push feed.
The only annoying thing about that cgit listing is that it's paginated and html based, we might want to fix that and work with them to deploy the change (and push it upstream).