Phone says that it is "up-to-date" after a canceled update I have canceled a Marshmallow update download by accident, and now when I got to check for updates, the phone says that the device software is up-to-date.  How can I fix this?

Phone: Moto G 3rd Generation
OS: Android 5.1.1

EDIT:  Unfortunately I cannot check solutions because recently the phone asked me to update to Marshmallow again, and this time I accepted.
You can try clearing data for the updater app under Settings -> Apps

Try checking for update after this.

I'm not sure whats the exact name of app in AOSP/Moto G rom.
For CM the name of app is cmupdater.

Hope this helps.