How would Git chapter look like in "The Architecture of Open Source Applications"?

  "The Architecture of Open Source Applications"[1] is a new book with
  chapters on the design of a wide variety of programs, including
  Asterisk, bash, Eclipse, LLVM, *Mercurial*, Sendmail, Telepathy,
  and many more. It's available for purchase or downloadable under
  the terms of the CC Attribution 3.0 license; some readers have
  already taken advantage of that license to make an epub[2] version
  available. Revenue from sales go to Amnesty International.

[1]: http://www.aosabook.org/en/ [2]: http://media.dropdo.com.s3.amazonaws.com/2Wo/Architecture%20of%20Open%20Source%20Applications.epub

Among covered programs is Mercurial (chapter by Dirkjan Ochtman)... but unfortunately no Git (they probably thought that one DVCS is enough).

How would such chapter on Git look like? Authors of this book encourage (among others) to write new chapters.