So the package installs ok, but when running the needed commands to make it the bootloader, it fails, looks like a packaging issue, will look into it (never used refind, just package it....).
EDIT:
Issue found, it needs hardcoding of the path, you can fix yourself now too (rebuild will follow soon) by editing refind-install:
kate /usr/bin/refind-install
Look for line 342, and change that to:
RefindDir="/usr/share/refind/"
https://github.com/KaOSx/main/commit/b4b00dd3164961acba0400f26bf55e91135b7cf0#diff-38162b5e79e4f6b1a72688438f929177R268