Re: My first git success [not quite]

Linus Torvalds wrote:

On Fri, 13 Jan 2006, walt wrote:

quoted

And it was all so easy I never broke a sweat.  Amazing!

 ...Most people don't bother to 
explain their problems well...

I see I still have a problem:  my mental model of how git
works is still wrong.

I used 'git-checkout -b test' to create a disposable place
to test the patch I was given.

Okay, making sure I'm now sitting in 'test', I apply the
patch to foo.c and do my testing.

Now, intending to delete my 'test' branch, I do git-checkout
master.  My mental model predicts that 'master' should still
be identical to 'origin' because I did the patching in 'test'.
Am I right so far?

The problem I see is that, after switching back to 'master',
foo.c is the patched version, not your original version.  I
figured that the git-checkout would overwrite any changes I
made to foo.c, but that doesn't seem to be the case.  To get
your original version back I had to delete foo.c and do a
git-checkout foo.c (or git-checkout -f master).

So, I clearly don't understand what git-checkout does.  It
doesn't seem to touch the already-checked-out sources at
all, which is what I would expect it to do.

Can someone hit me with the clue-stick here?  Thanks!