Yeah, but that relies on a kernel-feature(of NetBSD).

Doesn't come over with a port of just some userland(utilities).

Which commit are you referring to? The large commit you mentioned is actually the third one. It looks big because that's when I imported the NetBSD userland code (cp, ksh, etc.) along with the Makefiles. Before that, the repository only contained README.md and LICENSE files. That’s probably why it shows such a massive change.