Most of these questions are answered in the talk. The tl;dr is that you don't clone or check out anything at all: instead, you use CitC to create a workspace, a

Most of these questions are answered in the talk. The tl;dr is that you don't clone or check out anything at all: instead, you use CitC to create a workspace, and the entire repository is magically available to you to view or edit. This model precludes offline work, of course. But that's not much of a problem in practice.