Firstly, congratulations on the book. It’s great to have a reference based around what you would want to do with the software rather than the usual list of commands and what they do.
However – it seems to me that there is something missing. Having scanned through the book, there is extensive information on how to get stuff into Git and how to then manipulate it. There is not however – as far as I can see – a clear section on “how to get things out of Git”. I have picked up the various bits of information on how to do this from different references to Pull and fetch scattered around the book and from other sources.
I think though, that a Task in the “Working with Git” on the topic of “Getting stuff back out of Git” would be a very worthwhile addition.