Github - I switched accounts and now I can't push because I have the wrong username

So I'm now "jononomo" on github. A year ago, however, I was "zononomo". I quit software for a while and bought a new laptop in the interim. Then I came back and created a new account on Github under the handle "jononomo" and now I'm trying to sync my dotfiles between my two laptops. From my new laptop I created a git repository and pushed it up to github where it can be viewed under the "jononomo" account. Then I went to my old laptop and cloned this repository. Everything worked as expected. Then I made some changes to my dotfiles on my old laptop and now I'd like to push these changes to github so that I can then pull them down to my new laptop. The problem is that when I run the command: ``` git push origin master ``` I get the error message: ``` ERROR: Permission to jononomo/.dotfiles.git denied to zononomo. ``` The first thing I did was blow away my old SSH keys in `~/.ssh/id_rsa` and `~/.ssh/id_rsa.pub`. Then I generated new SSH keys and added my new public key to my jononomo github account. But that didn't fix the problem. If I run the command: ``` ssh -T git@github.com ``` I get the response: ``` Hi zononomo! You've successfully authenticated, but GitHub does not provide shell access. ``` Next, I followed the solution given here: https://stackoverflow.com/a/8152291/1701170 This person suggested that I create a `~/.ssh/config` file with the following contents: ``` Host github-jononomo User git Hostname github.com PreferredAuthentications publickey IdentityFile ~/.ssh/id_dsa.pub ``` and then he suggested I run the command: ``` git remote set-url origin git@github-jononomo:jononomo/.dotfiles.git ``` I tried that, but it didn't fix my issue. I'm still getting the message: ``` ERROR: Permission to jononomo/.dotfiles.git denied to zononomo. ``` Incidentally, my `.gitconfig` has the following contents: ``` [user] name = Jon Crowell email = me@myemail.com [github] user = jononomo token = 2a18a7235746324aefec34b234aa343a email = me@myemail.com [credential] helper = osxkeychain ```