https://bugzilla.redhat.com/show_bug.cgi?id=1795081
--- Comment #6 from Robert-André Mauchin zebob.m@gmail.com --- rm -rf %{buildroot}%{_pkgdocdir}/changelog at the end of %install
or just reference it in %files:
%files %doc %{_pkgdocdir}/changelog %license gpl-3.0.txt %{_bindir}/%{name} %{_mandir}/man1/%{name}.1.*