Seemingly overnight, some repositories went missing in our team. The project is still visible in the overview but when opening it it shows
No repository The repository for this project does not exist.
This happened to two (large) repositories that were in use for quite some time and (as far as anyone can tell) nothing changed on our end. What can we do to fix this besides resubmitting all the code from the working copies. This could be a work-around but I am quite concerned about the security/availability of our repositories now.