…because I was curious, and this is what I found:

What is the meaning of Git?

When Linus Torvalds made his initial commit of Git's code on April 7th 2005, he supplied the commit message:

Initial revision of "git", the information manager from hell

In this commit, he included a file called README. The first paragraph in this file reads:

GIT - the stupid content tracker

"git" can mean anything, depending on your mood.

 - random three-letter combination that is pronounceable, and not 
   actually used by any common UNIX command.  The fact that it is a
   mispronunciation of "get" may or may not be relevant.
 - stupid. contemptible and despicable. simple. Take your pick from the 
   dictionary of slang.
 - "global information tracker": you're in a good mood, and it actually
   works for you. Angels sing, and a light suddenly fills the room. 
 - "goddamn idiotic truckload of sh*t": when it breaks

This is a stupid (but extremely fast) directory content manager.  It  
doesn't do a whole lot, but what it _does_ do is track directory
contents efficiently.