I've tried cloning a private repo (that I have access to) on GitHub and get this message:
Clone Failed
Could not connect to 'origin'. Double-check your remote url, then make sure you have access to do that action on that remote and try again.
I run Windows 10, I have connected Kraken to GitHub and ssh key works and I can push and pull repos to my other GitHub repos that are public just fine.
I was also able to clone the repo from the command line just fine.
Best Answer
For some reason, GitKraken does not use your existing HTTPS credentials to communicate with GitHub, nor does it use SSH on Windows. Instead it uses OAuth2, which means you need to grant OAuth2 access to GitKraken.
These are the steps I took and they worked for me:
Access the GitHub GitKraken Application page and request access:
Approve of the Access you just requested:
However, in my experience I don't reliably see the GitKraken request listed in the Requests list. I've contacted GitKraken Support for assistance.