It's hard to say what this really is.
I've seen others claim to own this address like this one claiming only 5 characters is missing which would have taken less than a minute to recover.
This means there could be a possibility that someone has been selling a fake "damaged key" on the internet and best case scenario is that creator of this repository has fallen for the scam.

The other red flag is that there is no source code to see. You will have to blindly run a binary not knowing what it does. Which again means best case scenario you waste your time and worse case is that you infect your system!
The other problem that I see is that the creator is basically asking you to do all the work while only getting a small share of the possible prize (assuming it is real)!