You should be able to use the PKGBUILDs for the ArchLabs
-skel packages to build your own arm64 versions but unfortunately I don’t know how to find those.
Here are the packages themselves:
Grab the various
-skel packages, unpack them (with
tar xf) and copy the contents of
etc/skel/ to your home directory (or to
/etc/skel/ if you haven’t created a user yet).
And if you’re feeling adventurous NetBSD works on the PineBook Pro:
OpenBSD -current works also (and perhaps even the 6.7 release):
Alpine Linux have some generic
aarch64 images (including
uboot) that might work: