Re: [PATCHv5 5/5] submodule: add embed-git-dir function

> +/*
> + * Migrate the git directory of the given `path` from `old_git_dir` to
> + * `new_git_dir`. If an error occurs, append it to `err` and return the
> + * error code.
> + */
> +int relocate_gitdir(const char *path, const char *old_git_dir,
> +                   const char *new_git_dir, const char *displaypath,
> +                   struct strbuf *err)
> +{
> +       int ret = 0;
> +
> +       printf("Migrating git directory of '%s' from\n'%s' to\n'%s'\n",
> +               displaypath, old_git_dir, new_git_dir);