tags aren't fetched when fetching specific commit

[MacMalainey]

When running the following commands zopen git doesn't report the proper information

mkdir git-test-dir
cd git-test-dir
git init --bare
git remote add origin -- https://github.com/golang/go
git -c protocol.version=2 fetch -f --depth=1 origin 16afa6a740fac7442e94dcd2ec5ea4a4853e45dc:refs/dummy
git -c log.showsignature=false log --no-decorate -n1 --format="format:%H %ct %D" 16afa6a740fac7442e94dcd2ec5ea4a4853e45dc --

# Expected:
# 16afa6a740fac7442e94dcd2ec5ea4a4853e45dc 1734108730 grafted, tag: go1.24rc1, refs/dummy

# Got using zopen:
# 16afa6a740fac7442e94dcd2ec5ea4a4853e45dc 1734108730 grafted

Using protocol.version=2 is supposed to fix this issue but that doesn't seem to work on zopen git.

It may be related to this:
https://lore.kernel.org/git/20240124010056.GA2603087@coredump.intra.peff.net/

[IgorTodorovskiIBM]

I was able to reproduce this on both Mac and Linux with Git 2.48.1.

Adjusting the protocol.version to protocol.version=1 gets the expected output for Git 2.48.1

[IgorTodorovskiIBM]

Seems to have regressed from Git 2.47.1

[IgorTodorovskiIBM]

git bisect reveals 3f763ddf28d28fe63963991513c8db4045eabadc as the culprit:

commit 3f763ddf28d28fe63963991513c8db4045eabadc
Author: Bence Ferdinandy <bence@ferdinandy.com>
Date:   Fri Nov 22 13:28:50 2024 +0100

    fetch: set remote/HEAD if it does not exist

    When cloning a repository remote/HEAD is created, but when the user
    creates a repository with git init, and later adds a remote, remote/HEAD
    is only created if the user explicitly runs a variant of "remote
    set-head". Attempt to set remote/HEAD during fetch, if the user does not
    have it already set. Silently ignore any errors.

    Signed-off-by: Bence Ferdinandy <bence@ferdinandy.com>
    Signed-off-by: Junio C Hamano <gitster@pobox.com>