netdev - Re: [PATCH 0/15] spidernet driver bug fixes

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Date:	Wed, 13 Jun 2007 14:51:56 -0400
From:	Jeff Garzik <jeff@...zik.org>
To:	Linas Vepstas <linas@...tin.ibm.com>
CC:	Michael Ellerman <michael@...erman.id.au>, netdev@...r.kernel.org,
	cbe-oss-dev@...abs.org
Subject: Re: [PATCH 0/15] spidernet driver bug fixes

Linas Vepstas wrote:
> "git branch" shows that I'm on "upstream".  So I performed a "git pull" 
> (without any additional arguments) assuming that it would sync to your
> "upstream" branch.  And so my email was based on this.
> 
> Some googling seems to show that "git pull" has a bug/feature of
> ignoring the branch that one is working in, and pulling "master"
> no matter what.  I have no clue why; this seems broken to me.
> 
> So ... let me try again ... 
> git pull git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/netdev-2.6 upstream
> ...
> Automatic merge failed; fix up by hand

Unfortunately git isn't the greatest for saying "just give me what is on 
the remote", since each repository is an independent peer.

You need to:
* grab the latest torvalds/linux-2.6.git
* erase local netdev-2.6
* clone to create local netdev-2.6:
	URL=git//git.kernel.org/.../jgarzik/netdev-2.6
	git-clone --reference linux-2.6 $URL netdev-2.6
* that creates 'master' branch, which always equals vanilla upstream
* now create a local upstream branch:
	git checkout -b upstream master
* and finally, pull remote upstream branch into local upstream branch:
	git pull $URL upstream:upstream

Occasionally the remote 'upstream' will get "rebased", which means is 
has been completely replaced by a new linear history.  If you pull 
'upstream' after a rebase, into a local 'upstream', git will attempt to 
merge the same patches all over again, with disastrous results.

I wish there was a git option to "just make my shit look like the 
remote, dammit!"  The above is the "easiest" way I know how to do that.

	Jeff



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