/usr/share/glib-2.0/schemas/10_cinnamon-settings-daemon.gschema.override is in cinnamon-settings-daemon 3.2.1-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | [org.cinnamon.settings-daemon.peripherals.touchpad]
natural-scroll=false
|