Re: [PATCHv2 4/6] submodule--helper update-clone: allow multiple references

Stefan Beller [off-list ref] writes:

Allow the user to pass in multiple references to update_clone.
Currently this is only internal API, but once the shell script is
replaced by a C version, this is needed.

This fixes an API bug between the shell script and the helper.
Currently the helper accepts "--reference" "--reference=foo"
as a OPT_STRING whose value happens to be "--reference=foo", and
then uses

        if (suc->reference)
                argv_array_push(&child->args, suc->reference)

where suc->reference _is_ "--reference=foo" when invoking the
underlying "git clone", it cancels out.

with this change we omit one of the "--reference" arguments when passing

s/with this change/With this change/;

After the "We won't look at what is queued on 'pu'", I am debating
myself if I should amend this locally.