[BUG] builtin/checkout.c:1098: should be able to skip past 'refs/heads/'

Hi,

A bug was filed in the Fedora/Red Hat bugzilla today for the git 2.35.0 rc (rc1, but it's the same in rc2). Petr (Cc'd), ran the following

    git clone https://github.com/psss/fmf /tmp/fmf
    cd /tmp/fmf
    cp .git/refs/remotes/origin/HEAD .git/refs/heads/__DEFAULT__
    git checkout -f __DEFAULT__
    git checkout -f __DEFAULT__

The second git checkout call runs into the BUG() call added in 9081a421a6 (checkout: fix "branch info" memory leaks, 2021-11-16):

    BUG: builtin/checkout.c:1098: should be able to skip
    past 'refs/heads/' in 'refs/remotes/origin/master'!
    Aborted (core dumped)

This worked in 2.34.1, so it's new to 2.35.0. Should this work or does the manual copy to setup a branch fall into a new category of "don't do that"?

(It's novel to get a bug report from rc testing of a distro build -- that doesn't happen often.)