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From: Junio C Hamano <gitster@pobox.com>
Subject: Re: [PATCH 3/6] git-fsck: Do thorough verification of tag objects.
Date: Wed, 06 Jun 2007 03:35:25 -0700
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Cc: Matthias Lederhofer <matled@gmx.net>, git@vger.kernel.org
To: Johan Herland <johan@herland.net>
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Johan Herland <johan@herland.net> writes:

> I also noticed that a number of the early tags in the kernel repo use the 
> ancient format, and would thus fail fsck.
>
> <stroke-of-madness>
> Could we replace the v0.99 tag (and other ancient tags) with "correct" 
> versions, and then encourage users who have already cloned to delete their 
> v0.99 tag and re-pull? New clones would of course never see the old tag at 
> all. This sure as hell sounds similar to inserting foot into mouth before 
> shooting oneself in said foot, but it might still be worth considering...
> </stroke-of-madness>

I actually think that is not too bad.  In the course of git
development, the kernel folks had to do the wholesale repository
conversion twice (once when the order of hashing and compression
was swapped, another when the flat tree was made hierarchical),
I think.  Compared to that, tags are not referred to by other
entities, so it's much easier to "convert" (iow, re-sign).