Stop Github integration plugin from creating branches in each sync

Currently every manual sync Transifex creates branches in our repo for all languages enabled in the Transifex project. Is there a way to disable this behavior? I would want a sync to just open up branches for the language for which a PR gets opened up. Every sync there’s 100s of branches created in our repo which makes it harder for us to track our actual branches in the repo – even though most of these branches don’t do anything since there’s no PR opened against them.

Please let me know if this is intended behavior and if there’s a way to disable it.