Let's chmod differently.

python-qt5.spec

@@ -335,9 +335,10 @@ if [ "%{_prefix}" != "/usr" ]; then
 fi
 
 # ensure .so modules are executable for proper -debuginfo extraction
-for i in %{buildroot}%{python3_sitearch}/PyQt5/*.so %{buildroot}%{python3_dbus_dir}/pyqt5.so ; do
-test -x $i  || chmod a+rx $i
-done
+find %{buildroot} -type f -name '*.so' | xargs chmod a+rx
+#for i in %{buildroot}%{python3_sitearch}/PyQt5/*.so %{buildroot}%{python3_dbus_dir}/pyqt5.so ; do
+#test -x $i  || chmod a+rx $i
+#done
 %endif # with_python3
 
 # Python 2 build: