Missing Release.key in some OS directories

I’m the manager of some repo especially https://download.opensuse.org/repositories/home:/VIFIBnexedi
For several months, from time to time we have some OS where the Release.key is missing.

For example, nowadays we don’t have any Release.key file inside the following dir:

Note that in all other OS, the Release.key is present (e.g. see Debian 8 or Ubuntu 20).

My question is how is it possible and how to force generation of the Release.key file ?

Thank you very much.



Снимок экрана от 2023-01-04 19-53-36