Function check_submodule_move_head

unpack-trees.c:315–333

		fprintf(stderr, _("After fixing the above paths, you may want to run `git sparse-checkout reapply`.\n"));
}
static int check_submodule_move_head(const struct cache_entry *ce,
				     const char *old_id,
				     const char *new_id,
				     struct unpack_trees_options *o)
{
	unsigned flags = SUBMODULE_MOVE_HEAD_DRY_RUN;
	const struct submodule *sub = submodule_from_ce(ce);

	if (!sub)
		return 0;

	if (o->reset)
		flags |= SUBMODULE_MOVE_HEAD_FORCE;

	if (submodule_move_head(ce->name, o->super_prefix, old_id, new_id,
				flags))
		return add_rejected_path(o, ERROR_WOULD_LOSE_SUBMODULE, ce->name);
	return 0;
}

/*
 * Perform the loading of the repository's gitmodules file.  This function is