Re: [PATCH 7/7] t7814: show lack of alternate ODB-adding

Hmm, there is at least one call chain in grep which might end up
calling add_to_alternates_memory() directly (although it only seems to
happen on a very specific case):

        grep_submodule > repo_read_gitmodules >
        config_from_gitmodules > add_to_alternates_memory

We can check that with the following:

[snip reproduction recipe]

Thanks - it looks like my patch set is incomplete then. I'll make
config_from_gitmodules() use my new function and if the existing grep
test cases don't cover your reproduction recipe, I'll add yours in.