sys-kernel/
pf-sources

Linux kernel fork that includes the pf-kernel patchset and Gentoo's genpatches

https://pfkernel.natalenko.name/

There are no pull requests

You think something is missing here?
Start with filling a new pull requests.

If you also like to help the Gentoo project, you can consider sending a Pull Request via GitHub.
Before doing so, you might want to take a look at the wiki page.