The package rpms/prewikka.git has added or updated architecture specific content in its spec file (ExclusiveArch/ExcludeArch or %ifarch/%ifnarch) in commit(s): http://pkgs.fedoraproject.org/cgit/rpms/prewikka.git/commit/?id=d703c8b0d308....
Change: +ExclusiveArch: %{ix86} x86_64
Thanks.