From Fedora Project Wiki
Clarification is to make clear that we're talking about duplication between subpackages as well as merely inside of a single subpackage.
Change to both the Guidelines and Review Guidelines. Text is currently the same in each.
Duplicate Files
A Fedora package must not list a file more than once in the spec file's %files listings.
Discussion
See Talk:PackagingDrafts/Duplicate Files for discussion.