Copy Options

https://rclone.org/flags/#sync

--checksum

https://rclone.org/docs/#c-checksum

• By default rclone looks at the modification time and file size to determine two files are equal
• When this is enabled, it checks the file hash and file size
• Crypt remotes do not support it

--size-only

https://rclone.org/docs/#size-only

• By default rclone looks at the modification time and file size to determine two files are equal
• When this is enabled, it checks only the file size

--modify-window

https://rclone.org/docs/#modify-window-duration

• This is the time difference tolerance between the two files to be considered the same
• On MacOS this should be 1s