$ git clone git@github.com:roboguice/roboguice.git
Cloning into 'roboguice'...
Permission denied (publickey).
$ ls -al ~/.ssh
Cloning into 'roboguice'...
Permission denied (publickey).
$ ls -al ~/.ssh
total 120
-rw------- 1 uki staff 1675 Oct 31 2012 id_rsa
COPY YOUR PUBLIC KEY to clipboard
$ pbcopy < ~/.ssh/id_rsa.pub
PASTE your SSH key exactly as copied (i.e. in GitHub settings)
https://github.com/settings/ssh
https://github.com/settings/ssh
$ git clone git@github.com:roboguice/roboguice.git roboguice
Cloning into 'roboguice'...
remote: Counting objects: 18463, done.
Receiving objects: 15%