set git account rather than default

set-multi-github-accounts.md

Setting up github ssh

git clone your-git-repo

After ssh-keygen and add to your github

Host github_adong
    Hostname github.com
    User git
    Port 22
    IdentityFile ~/.ssh/adong_github_rsa

git remote remove origin
git remote add origin git@github_adong:org/repo.git
git remote -v

After that, now you can push git push -u origin head