From: Junio C Hamano <gitster@pobox.com>
Date: Sun, 04 Apr 2021 23:10:31 GMT
Subject: Re: should git maintenance prefetch be taught to honor remote.fetch refspec?
Message-ID: <xmqqft057ijc.fsf@gitster.g>
In-Reply-To: <f113284b-a7fe-ba7f-ce1c-d214efd5d0c6@gmail.com>

Derrick Stolee <stolee@gmail.com> writes:

>> I do not recommend unparsed refspec and textually munging, by the
>> way.  Doesn't
>> 
>> 	git fetch master:remotes/origin/master
>> 
>> first parse to normalize the src/dst sides to turn it into
>> 
>> 	git fetch refs/heads/master:refs/remotes/origin/master

I tried to jug my memory in this area a bit by reading the relevant
code.  For non-wildcard refspec, e.g. with

    [remote "origin"]
	url = ../git.git/
	fetch = master:remotes/origin/master
	tagopt = --no-tags

you'd get

    $ git fetch -v
    From ../git
     * [new branch]            master     -> origin/master
    $ git for-each-ref
    2e36527f23b7f6ae15e6f21ac3b08bf3fed6ee48 commit	refs/remotes/origin/master

It all happens inside remote.c::get_fetch_map(), I think.

Thanks.