I wanted to install some source code that was on git. Don't really know what that means, I've never used git before, but I figured it was time to learn so,

• I first installed git.

• Next I tried to clone the git directory of the software I want to install.

• I got a message saying "the authenticity of can't be established". I went ahead and ended up with another message saying warning such and such will be added to known hosts. I went ahead and it said something about hanging up on the connection.

After searching the internet for a while I realized I didn't need git to install the software but now I have it installed and have added some host to some file or another. I'm concerned I've created some security issues I need to fix.

Can anyone help me undo what I've done, or better understand what I've done. Did adding a git project open up my system? Beyond that can anyone tell me how git works. Everything I've found assumes I know stuff that I don't yet.

Thanks