• we have a master
• we have a feature branch feat-xyz
• we do a bugfix on branch bug-abc but branched from feat-xyz instead of master and want to rebase our bugfix branch to contain only commits from master + our bugfix branch

$ (bug-abc) git rebase --onto master feat-xyz

Deploy key is a SSH key set in your repo to grant client read-only (as well as r/w, if you want) access to your repo.

As the name says, its primary function is to be used in the deploy process in replace of username/password, where only read access is needed. Therefore keep the repo safe from the attack, in case the server side is fallen.

1. Generate a ssh key