From: Xin Li <delphij@google.com>
Date: Wed, 13 May 2020 21:41:00 GMT
Subject: Re: [PATCH] fetch: allow adding a filter after initial clone.
Message-ID: <CAOhzdui-4KeOit74fTy=3YxSncHGZzy+cE+6njyjHPyJ8xFpMA@mail.gmail.com>
In-Reply-To: <xmqqo8qrsh0d.fsf@gitster.c.googlers.com>

The proposed change would allow converting an existing git clone to
use partial clones.  For example:

$ git clone --depth=1 https://android.googlesource.com/platform/bionic .
$ git fetch --unshallow --filter=blob:none origin

Previously, to allow this one would have to do the following manually
first; the existing code would handle the rest gracefully:

$ git config core.repositoryFormatVersion 1
$ git config extensions.partialClone origin

And the proposed change would have git do it for the user
automatically, the existing workflow remains otherwise unchanged.