What if someone creates a clone of my app for phishing?

https://github.com/positive-intentions/chat

im working on a decentralized chat app similar to Simplex with the additional detail that it's mainly presented as a webapp. Simplex recently posted on their subreddit about "somone else" having registered and hosted a copy of thier website/app.

this could be for something like phishing and they correctly notified people and reccommend to not download from there.

https://www.reddit.com/r/SimpleXChat/comments/1epuf5w/please_note_we_do_not_own_the_domain/

im now thinking i should point people to my github repository. (the links to the webapp and builds for ios/andoid/ desktop can be found directly there from the readme)... similar to a "domain", im sure its easy enough to create a new github organization and repo that looks similar to the one i already have.

i added a section in the readme about improving the security of the app by using a selfhosted version for those that want/need hightened security/privacy.

Simplex also mention they submitted a complaint to the domain registrar. id like help to learn about what other things i could do if somthing similar happens to my app. this is something that id like to know more about because its seems inevitable to happen (if it becomes popular) given my app is open source and easy to selfhost.