The only one that know is obtainium, but from what i understood it only fetches the latest version of an app and it doesn’t even check if it gets installed correctly.
I’m also i’m concerned about the safety of the apks; i know that trusting the f droid repo isn’t any safer than trusting the builds from the dev, but it would be nice to know if there is any way to check other than checking the code by hand.
Tbh, there are a handful of reasons to avoid F-Droid, all of which existed long before this. AFAIK nothing with the app itself changed as of yet so I’d hold off on quitting it over this.