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From:   Junio C Hamano <gitster@pobox.com>
To:     Konstantin Ryabitsev <konstantin@linuxfoundation.org>
Cc:     git@vger.kernel.org
Subject: Re: Supporting --depth when cloning from a bundle
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Date:   Thu, 17 Feb 2022 13:05:55 -0800
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Konstantin Ryabitsev <konstantin@linuxfoundation.org> writes:

> Sorry for the potentially stupid follow-up question. I know that git makes a
> distinction when cloning locally between a direct path and a file:// URL (e.g.
> it's only possible to do a shallow clone from a local repository when using
> the file:// scheme).

The local optimization uses hardlinks into an existing repository
bypassing most of what makes Git Git, and there is no negotiation.

"clone --no-local $PATH" or "clone file://$PATH" runs the "server
side" inside $PATH and talks with it, which is ONLY possible because
$PATH is a real repository.  A bundle file is not a repository, and
nobody has written the "server side" to workin inside it, so...