dak@lola:/usr/local/tmp/lilypond-extra$ git push origin
fatal: remote error:
You can't push to git://github.com/gperciva/lilypond-extra.git
dak@lola:/usr/local/tmp/lilypond-extra$ git push git@gith...:gperciva/lilypond-extra.git
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