From: Herton R. Krzesinski on gitlab.com
I think this need an additional change on top: If INCLUDE_FEDORA_FILES is
disabled, you don't need to copy ```fedora_files/*```. The same with
INCLUDE_RHEL_FILES. It is harmless the way it is right now, however, when the
maintainer does the dist-git sync, a diff file is generated, and those uneeded
files which are copied will show on the diff saying they exist there but not
on the dist-git sync copy (because they are not included on the src.rpm), so I
think they must conditionally copied here.