How to change GitHub accounts when trying to push from Git?

Question

So I may have set up Git under an account that I will not be using in the future, and I want to change that account to my personal GitHub account. I would like to push under my personal rather than that one.

If this has any relevance, I've created a separate SSH key for my computer, but as inexperienced as I am, I'm not sure what to do with it.

My ultimate goal is to change the GitHub account I'm under, because whenever I try to push code to my personal account's repository, I get this error message:

$ git push origin master
remote: Permission to maiusername/SURVIVAL2.git denied to SupernovaRobotics.
fatal: unable to access 'https://github.com/maiusername/SURVIVAL2.git/': The requested URL returned error: 403

SupernovaRobotics is what I'm trying to get rid of, but I'm not sure how!

Please help!!

Answer 1

Add your public ssh key to your GitHub account (drop down on the top right, settings, SSH and GPG keys, new SSH key).
Then execute:

git remote set-url origin https://github.com/username/desiredrepo.git

This command changes the repository of origin.1

Answer 2

First, if you are pushing to an https url, changing anything regarding SSH won't matter one bit.

Regarding HTTPS, if the wrong user is consistently used, that means the wrong credentials (username/password) is used by Git. That is because you must be using a credential helper which caches said credentials.

Check what credential helper you are using with:

git config -l | grep credential

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The alternative (if you do have changed your ~/.ssh/id_rsa(.pub) keys) is to use an ssh url

git remote set-url origin git@github.com:maiusername/SURVIVAL2.git

Then your new ssh key would be taken into account.