For Chapter 1 copy-paste this command into the console: download_depot 1721470 1721471 3025258893882947606

Build from: October 12, 2021 (initial release of Poppy Playtime - Chapter 1).

Copy-paste this command into the console: download_depot 1817490 1817491 8280254860437632060

It works only for Chapter 2, this uses the old build from May 5th, 2022 (initial release of Poppy Playtime - Chapter 2) works fine for me.