[ruby-core:21180] how to use git to work with MBARI patches

At 3:16 AM +0900 1/7/09, Brent Roman asked in a previous thread about git:
>P.S.  Can anyone suggest a good, gentle introduction to git for mere
>mortals, lest I repeat Eric Hodel's negative experiences with it?

Hi Brent,

Here's a special intro to git for you (and anybody else on ruby-core
interested in your patches).

I'm not writing any kind of gentle introduction -- I'm writing just enough
so you can do several things which should be interesting to you. I'm definitely
NOT presenting enough info so you won't easily mess things up.

The idea is to get as quickly to some use of git that provides real value .. so
it becomes actually worth it to learn it.

A gentle intro will still be very useful. I recommend the Scott 
Chacon's screencasts:

   http://gitcasts.com/

and the documentation links here:

   http://git-scm.com/documentation

So here's what's covered:

1. Get git installed from source using git (so you can update it easily later).

2. Cloning an existing subversion repository so you can easily keep
up-to-date with another project and view the changesets.

3. Clone MRI Ruby, apply your MBARI memory patches in a new branch, and push
that branch to a public git repo so others can more easily try the patches.

The email was a bit long (and might be better in a place it can be edited) so
the full intro is here:

   http://gist.github.com/44147