I have no knowledge at all, I don't even know I'm typing this reply. I'm just hitting touch screen buttons randomly because I like the colors they make and if it's forming words or sentences, that's pure coincidence.

On this basis I ask, what it do? 

 You can find someone's code repository, in order to clone it, by using a Nostr address instead of GitHub or whatever.

We have a use case for this with Ngit.
 DanConwayDev