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From: Junio C Hamano <junkio@cox.net>
Subject: Re: Git-commits mailing list feed.
Date: Sat, 23 Apr 2005 12:57:12 -0700
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Cc: Sean <seanlkml@sympatico.ca>,
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To: Linus Torvalds <torvalds@osdl.org>
In-Reply-To: <Pine.LNX.4.58.0504231234550.2344@ppc970.osdl.org> (Linus
 Torvalds's message of "Sat, 23 Apr 2005 12:38:23 -0700 (PDT)")
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>>>>> "LT" == Linus Torvalds <torvalds@osdl.org> writes:

LT> Guys, I will say this once more: git will not look at the signature.

LT> And that is why I from the very beginning tried to make ti very clear that
LT> the signature goes at the end. Not at the beginning, not in the middle,
LT> and not in a different file. IT GOES AT THE END.

If that is the case, can't you do it without introducing this
new tag object, like this?

  1. Find existing commit-id that you want to tag.
  2. Sign that commit object:

     cat-file commit $commit |
     gpg --detach-sign --armor -u 'Linus Torvalds' >commit.sig

  3. Make another commit, making the original commit as its parent:

     {
         echo tag This is my tag.
         cat commit.sig 
     } | commit-tree $(cat-file commit $commit |
                       sed -e 's/tree //;d') -p $commit

Then you can publish the ID of this commit object, which attests
that the original commit is what you vouch for.  Am I missing
something?