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From:   Anthony Sottile <asottile@umich.edu>
Date:   Tue, 7 Jan 2020 21:28:03 -0800
Message-ID: <CA+dzEBnT2Bgw7iwVWiHyCKs1V1oaSuEb8rR+dmiO7RbqpaVjgw@mail.gmail.com>
Subject: `git fetch origin ''` (the empty string) -- should this work?
To:     Git Mailing List <git@vger.kernel.org>
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this seems to end up doing the same as `git fetch origin HEAD` but I
can't figure out why -- perhaps someone on this list can help me :)

$ git fetch origin ''
>From github.com:python/cpython
 * branch                  HEAD       -> FETCH_HEAD

what I expected was `fatal: Couldn't find remote ref ''` or something
of the sort as would be seen when fetching some non-existent branch:

$ git fetch origin wat
fatal: Couldn't find remote ref wat

Anthony