- Write `goog-reserved-file-mtime` in addition to `mtime`. - Fallback to `goog-reserved-file-mtime` if `mtime` doesn't exist. - ref rclone/rclone#5331
- Write `goog-reserved-file-mtime` in addition to `mtime`. - Fallback to `goog-reserved-file-mtime` if `mtime` doesn't exist. - ref rclone/rclone#5331