Note
This guide is mostly outdated, I'd recommend using gigot instead.
ssh-keygen
Enter a filename with path (I named mine ~/.ssh/id_aer)
Go through with the normal process
Go to https://github.com/settings/keys and add your key there
Configure SSO for it to work on other organizations
The easiest way is to add an alias like this to your shell RC file:
alias aer-clone="git clone -c \"core.sshCommand=ssh -i ~/.ssh/id_aer\""