Pull kernel source, apply patches, build kernel, run kernel.

https://wiki.ubuntu.com/Kernel/BuildYourOwnKernel

Assuming it's accepted right away, it'd be in the merge window for kernel 6.4, and since Ubuntu 23.04 just came out with 6.2, you'll have to wait for 23.10 at the earliest.

Or you could just compile your own kernel and test it out.