I\'ve been trying for the last 2 hours.
I\'m using xp-dev as a git repository provider (because I\'m already paying and I have svn repo over there)
I\'ve given xp-dev my public
GitExtension ask to load private key only if you use Putty. You should do it manually for OpenSSH like described for GitHub https://help.github.com/articles/generating-ssh-keys