SteamDB
Steam Console
steam://open/console
Format
download_depot {APPID} {DEPOTID} {MANIFESTID}
Example: Mirror Emoji
download_depot 644560 1120630 5362505210744167703
Example: SkyrimSE.exe - 1.6.640
download_depot 489830 489833 5291801952219815735
Example: Skyrim SE - 1.5.97 All
download_depot 489830 489831 7848722008564294070
download_depot 489830 489832 8702665189575304780
download_depot 489830 489833 2289561010626853674