User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:21.0) Gecko/20100101 Firefox/21.0 (Beta/Release) Build ID: 20130512194445 Steps to reproduce: Clone the App-Stub firefox OS template for development using the following command $ git clone email@example.com:mozilla/mortar-app-stub.git myapp Actual results: Cloning into 'myapp'... The authenticity of host 'github.com (188.8.131.52)' can't be established. RSA key fingerprint is 16:27:ac:a5:76:28:2d:36:63:1b:56:4d:eb:df:a6:48. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added 'github.com,184.108.40.206' (RSA) to the list of known hosts. Permission denied (publickey). fatal: The remote end hung up unexpectedly Expected results: The repository should've been cloned successfully.
You should clone using the https:// protocol, otherwise it fails because you might not have permissions to access with git:// I see it is updated now in the MDN page, though. Could you please try to reproduce it? If it doesn't happen any more we can close this as fixed :-)
I think shifting to https:// solves a lot of problems. I figured out that I filed this issue because back then I was behind a proxy firewall which has SSH disabled, Using https:// solves the issue. Closing this issue as resolved.