> Only accept patches on the mailing list

imho: PostgreSQL's practice of using mailing lists for patch submissions leads to thorough code reviews and deep community involvement. While less convenient than modern platforms, it ensures transparency and keeps the project independent of third-party services.

https://wiki.postgresql.org/wiki/Submitting_a_Patch

https://wiki.postgresql.org/wiki/So,_you_want_to_be_a_develo...