NOt sure if I'm being helpful here, but certainly the way Ive used git (i.e getting stuff off github) is by using gitg (gitg --all &) once Ive created a local repository. Picking the version I want based on tag/date etc and doing a git checkout <sha or tag>.
Sorry havent used git-archive before

On Jun 20, 2010 2:45pm, Jenny Hopkins <hopkins.jenny@gmail.com> wrote:
> Hullo,
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>
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> Does anyone use GIT?
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> I want to know if one can use git-archive to retrieve a tarball
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> snapshot of head revision at or before an instructed date.  Google is
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> not being my friend.
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> Thanks,
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> Jenny
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