RTFM && WTFN - backup

https://stackoverflow.com/questions/2432764/how-to-change-the-uri-url-for-a-remote-git-repository

# git remote set-url origin git@github.com:xxx/xxx.git

# git config -l
user.name=xxx
user.email=xxx
core.repositoryformatversion=0
core.filemode=true
core.bare=false
core.logallrefupdates=true
remote.origin.url=https://github.com/xxx/xxx.git
remote.origin.fetch=+refs/heads/*:refs/remotes/origin/*
branch.master.remote=origin
branch.master.merge=refs/heads/master

# cat ~/.ssh/config
...

Host github.com
    HostName github.com
    User git	
    IdentityFile ~/.ssh/github_key

...