I've looked on multiple occasions for a 'dnf whomaintains', or a section in info containing 'source' or maintainer.
Let's take an example:
$ dnf info kubernetes-client
Source : kubernetes-1.20.5-1.fc34.src.rpm
Repository : @System
From repo : fedora
URL : https://k8s.io/kubernetes
(...License, Description, Size, Architecture, Version, Release, Summary)
How or where do I make a suggestion? Can I send a patch/PR to the automated build process, if there is one?
I'm not 100% sure if you mean a request to Fedora or upstream, but most of the info you're looking for should be found here:
The key is you have to use the source name even though many packages can be generated from it (Note the Sources tag).
Thanks,
Richard