pbuild: always refresh repo meta data for now

otherwise we run into download errors and people do not understand that
they have to clean their cache. This leads to false bugreports against our
infrastructure.

PBuild/RemoteRepo.pm

@@ -325,7 +325,8 @@ sub fetchrepo {
       }
       undef $bins if join(',', @$modules) ne join(',', @$repomodules);
     }
-    return $bins if $bins && replace_with_local($repodir, $bins);
+# FIXME: this is harmful since remote changes never get taken into account and this may lead to download errors
+#    return $bins if $bins && replace_with_local($repodir, $bins);
   }
   my $tmpdir = "$repodir/.tmp";
   PBuild::Util::cleandir($tmpdir) if -e $tmpdir;