What's the best practises for modifying pika for customized usage?

[sprappcom]

i realised the latest copy of pika / codis changes a lot from before (3 weeks ago) by a lot, some parts doesnt match up and cant be reuse anymore with my own custom forked version.

possible to provide suggestions / guidelines on best practices for modification to own use?

p.s. : i've changed crc32 to xxh3 so that it's faster but i doubt this repo will change to accommodate this. so how do i ensure my forked version "is compatible" with future editions? maybe a plugin or some guidelines on how we can make this possible?