With this method https://sitecore.stackexchange.com/a/5588/1360, we can sync the content from FileSystem to Sitecore DB.
Can we do the reverse? DB to FileSystem using something like
"Reserialize-Unicorn -ControlPanelUrl 'http://sc82u5.local/unicorn.aspx' -SharedSecret '4DED97FE-32B0-4F0A-AFD8-1CA3229C74F5' -Configurations @('Content')"