Thanks @mtissington for reporting!
Yes, unfortunately, the error kept returning. Something is seriously broken in our internal OBS instance.
The good news is: We do not actually need to hide things in an internal OBS.
I’ve now moved the repo to the public openSUSE Build Service:
Please check that out, and let me know if that fixes the issue.
Note, that with this move, not only the repo url changes, but also the signing keys, as they are generated by the OBS instance.