RE: fetch and pull

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===Re:===
> There was patch series adding support --ff=only, but I think it didn't
> made into git...  Hmmm...

I do not think it has much to do with the main point of what John wants
to
do which is to muck with local branch without checking it out, which is
only possible when it happens to fast forward to the new tip of the
corresponding branch obtained from the the remote.
===end===

It occurs to me that maybe my concept is off, if it is being so
difficult.

Here is what I'm "cooking":

======excerpt======

To keep apprised of other people's work, including updates to the main
dev branch, start the day with:

	git fetch

This will update your "remote tracking branches", letting you see what
everyone else is working on, and letting you see the central
repository's dev (as remotes/origin/dev) compared to your own local dev,
so you can see what has been added.

This does not change your local dev, or any other branches you are
using.  As for your own topic branches, you are the only one who changes
them.  This is a perfectly safe command and can be performed any time to
update your view of what's happening throughout the team.
You will, in particular, see your local dev where you last left it, and
the current remotes/origin/dev pointing ahead of it.  E.g.

	A <== dev
	 \
	  B--C--D <== remotes/origin/dev

In this example, you see plain "dev" still pointing to A, and
"remotes/origin/dev" pointing to D.  So, you can tell that B, C, D were
added.  Review the nodes B, C, and D, by reading the comments and seeing
which files were affected, and look deeper if it seems to affect what
you are doing.  Finally, issue the command

	??? 

And this will update your local dev to match the origin.

======

Basically, instead of mysterious "can't push" messages, the idea is that
people can feel good about 'fetch' as refreshing their view of the
central repo, so gitk can show them how the central dev (and other
branches) differs from their own.  

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