Re: [PATCH v2 7/8] submodule-config: pass repo upon blob config read

quoted

@@ -1827,7 +1829,7 @@ static int git_config_from_blob_ref(config_fn_t fn,

        if (get_oid(name, &oid) < 0)

This should be `repo_get_oid(repo, ...)` now.

Ah, good catch! This wasn't caught by the tests because the submodule
config mechanism always passes a full-length hexadecimal string hash as
"name" - and probably would never be caught because
git_config_from_blob_ref() is only called from config_with_options(),
which is called with non-NULL source from only 2 files:
submodule-config.c (this one) and builtin/config.c (which most likely
will never operate on any repo other than the_repository). I'll refactor
the API to avoid this situation in the first place.