Getting my private key from my OpenShift account

I am a relatively new user to OpenShift. I have some experience with git and I was using it perfectly on my old Mac. The Mac broke down and had to recycle the parts to a store that recycles computer parts.

Now I need to download the files at http://sharkbtc.com. However, when I run git clone, I get prompted for my private key, which I can't find in the OpenShift online console (though I do see public keys).

I do vaguely remember ruing a rhc setup on my Linux machine. Though when I run git pull now I get asks me for a private key.

Any help is greatly appreciated.