title: public key denied, but ssh key accepted
body: <p>I'm having trouble with pushing to git (or rather, git is having trouble with me) as when I <code>git push</code> I get an error: </p>
  
  <pre><code>Permission denied (publickey).
  fatal: The remote end hung up unexpectedly
  </code></pre>
  
  <p>I've looked at git's <a href="https://help.github.com/articles/error-permission-denied-publickey" rel="nofollow">help page</a> for this, but all of the 'tests' that they suggest are passing, including checking to see that the correct key is being used by running <code>$ ssh -vT git@github.com</code>.  This seems to be where most people run aground based on the posts I've seen on SO, but it's working for me.  Here's the output in case I'm missing something.   </p>
  
  <pre><code>OpenSSH_5.2p1, OpenSSL 0.9.8r 8 Feb 2011
  debug1: Reading configuration data /etc/ssh_config
  debug1: Connecting to github.com [192.30.252.130] port 22.
  debug1: Connection established.
  debug1: identity file /Users/charliekim/.ssh/identity type -1
  debug1: identity file /Users/charliekim/.ssh/id_rsa type 1
  debug1: identity file /Users/charliekim/.ssh/id_dsa type -1
  debug1: Remote protocol version 2.0, remote software version OpenSSH_5.9p1 Debian-5ubuntu1+github5
  debug1: match: OpenSSH_5.9p1 Debian-5ubuntu1+github5 pat OpenSSH*
  debug1: Enabling compatibility mode for protocol 2.0
  debug1: Local version string SSH-2.0-OpenSSH_5.2
  debug1: SSH2_MSG_KEXINIT sent
  debug1: SSH2_MSG_KEXINIT received
  debug1: kex: server-&gt;client aes128-ctr hmac-md5 none
  debug1: kex: client-&gt;server aes128-ctr hmac-md5 none
  debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024&lt;1024&lt;8192) sent
  debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
  debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
  debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
  debug1: Host 'github.com' is known and matches the RSA host key.
  debug1: Found key in /Users/charliekim/.ssh/known_hosts:1
  debug1: ssh_rsa_verify: signature correct
  debug1: SSH2_MSG_NEWKEYS sent
  debug1: expecting SSH2_MSG_NEWKEYS
  debug1: SSH2_MSG_NEWKEYS received
  debug1: SSH2_MSG_SERVICE_REQUEST sent
  debug1: SSH2_MSG_SERVICE_ACCEPT received
  debug1: Authentications that can continue: publickey
  debug1: Next authentication method: publickey
  debug1: Offering public key: /Users/charliekim/.ssh/id_rsa
  debug1: Server accepts key: pkalg ssh-rsa blen 277
  debug1: Authentication succeeded (publickey).
  debug1: channel 0: new [client-session]
  debug1: Requesting no-more-sessions@openssh.com
  debug1: Entering interactive session.
  debug1: Remote: Forced command.
  debug1: Remote: Port forwarding disabled.
  debug1: Remote: X11 forwarding disabled.
  debug1: Remote: Agent forwarding disabled.
  debug1: Remote: Pty allocation disabled.
  debug1: Remote: Forced command.
  debug1: Remote: Port forwarding disabled.
  debug1: Remote: X11 forwarding disabled.
  debug1: Remote: Agent forwarding disabled.
  debug1: Remote: Pty allocation disabled.
  PTY allocation request failed on channel 0
  Hi **! You've successfully authenticated, but GitHub does not provide shell access.
                                                                                              debug1: client_input_channel_req: channel 0 rtype exit-status reply 0
  debug1: client_input_channel_req: channel 0 rtype eow@openssh.com reply 0
  debug1: channel 0: free: client-session, nchannels 1
  Connection to github.com closed.
  Transferred: sent 2496, received 3048 bytes, in 0.3 seconds
  Bytes per second: sent 9462.3, received 11554.9
  debug1: Exit status 1
  </code></pre>
  
  <p>Here is the remote URL in <code>.git/config</code></p>
  
  <pre><code>[remote "origin"]
      url = ssh://github.com/[user]/[repo].git
      fetch = +refs/heads/*:refs/remotes/origin/*
  </code></pre>