--no-overwrite-dir (Preserve metadata of existing directories) This is a really good point! It solves the main problem. I'll add it to the article. Although t

--no-overwrite-dir (Preserve metadata of existing directories) This is a really good point! It solves the main problem. I'll add it to the article. Although that's what, unfortunately, is set by default (at least in GNU tar): --overwrite-dir (Overwrite metadata of existing directories when extracting (default).)