From mboxrd@z Thu Jan  1 00:00:00 1970
From: Junio C Hamano <gitster@pobox.com>
Subject: Re: Computing the number of patches in linux-next tree
Date: Tue, 22 Jul 2008 10:04:52 -0700
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Cc: Tony Luck <tony.luck@intel.com>,
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To: Johannes Schindelin <Johannes.Schindelin@gmx.de>
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In-Reply-To: <alpine.DEB.1.00.0807221727210.8986@racer> (Johannes
 Schindelin's message of "Tue, 22 Jul 2008 17:28:17 +0100 (BST)")
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Johannes Schindelin <Johannes.Schindelin@gmx.de> writes:

> On Tue, 22 Jul 2008, Tony Luck wrote:
>
>> git tag | grep next- | sort | while read tag
>
> This should not be necessary... AFAICT "git tag" sorts its output already.
>
>> What does the "git-where-did-this-tag-branch-from-linus" command look like?
>
> git merge-base --all <branch1> <branch2>
>
> Be warned: there might be multiple merge bases.

I do not think that approach applies to linux-next, which is constantly
rewound to the then-tip-of-linus and merge remaining bits.  The question
is "where does this branch begin", which does not have an answer in git.