The following came through on the geonetwork chat:
Olivier Curdy: Thanks for the reply. As we are working with Ssebr72 (Sebastien Riollet) on the new Swiss eCH-0271 schema (or ISO19115-3.2018.che on metadata101), I will need to make some PRs from time to time. As this is my first time on this repo, it might be a good idea to go through the forum to explain my changes. The last PR I made mainly concerned translations into German, Italian and French.
They also point the the following issue:
I have created a new issue in GitHub that briefly explains our intentions for translating the Swiss schema iso19115-3.2018.che. Is this sufficient for the community? https://github.com/metadata101/iso19115-3.2018.che/issues/4
Based on that I can see their GitHub ID: OCurdy (Olivier Curdy) · GitHub and see some recent activity across several codebases.
I would like to take their request at face value and extend commit access to that repository; I understand they are just starting out.