Before: git@github.com:k78ma/quartz.git
With SSH config aliases:
git@github-k78ma:k78ma/quartz.git
git@github-uwtron16:uwtron16/repo.git
So basically just replace github.com with github-k78ma
Clone with alias:
git clone git@github-k78ma:k78ma/quartz.git
git clone git@github-uwtron16:uwtron16/some-repo.git