Re: [PATCH 0/2] Hiding some refs in ls-remote

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On Sat, Jan 19, 2013 at 7:37 AM, Junio C Hamano <gitster@xxxxxxxxx> wrote:
> This is an early preview of reducing the network cost while talking
> with a repository with tons of refs, most of which are of use by
> very narrow audiences (e.g. refs under Gerrit's refs/changes/ are
> useful only for people who are interested in the changes under
> review).  As long as these narrow audiences have a way to learn the
> names of refs or objects pointed at by the refs out-of-band, it is
> not necessary to advertise these refs.
>
> On the server end, you tell upload-pack that some refs do not have
> to be advertised with the uploadPack.hiderefs multi-valued
> configuration variable:
>
>         [uploadPack]
>                 hiderefs = refs/changes
>
> The changes necessary on the client side to allow fetching objects
> at the tip of a ref in hidden hierarchies are much more involved and
> not part of this early preview, but the end user UI is expected to
> be like these:
>
>         $ git fetch $there refs/changes/72/41672/1
>         $ git fetch $there 9598d59cdc098c5d9094d68024475e2430343182
>
> That is, you ask for a refname as usual even though it is not part
> of ls-remote response, or you ask for the commit object that is at
> the tip of whatever hidden ref you are interested in.

Should the client side learn how to list hidden refs too? I'm thinking
of an extreme case where upload-pack advertises nothing (or maybe just
refs/heads/master) and it's up to the client to ask for the ref
selection it's interested in. upload-pack may need more updates to do
that, I think.
-- 
Duy
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