Some remote changes aren't detected because of modification time rounded down ot the second

    milliseconds = fs_item['lastModificationDate']
    last_update = datetime.fromtimestamp(milliseconds // 1000)

elif (remote_info.last_modification_time != self.last_remote_updated
    or self.remote_parent_ref != remote_info.parent_uid):
    # Remote update and/or rename and/or move or restore from the trash
    log.trace("Doc %s has been either modified, renamed, moved or"
              " restored from the trash,"
              " set last_remote_updated to %s",
              self.remote_name, remote_info.last_modification_time)
    self.last_remote_updated = remote_info.last_modification_time
    modified = False
    # Only consider a remote folder for which the modification time
    # has changed as modified if its name or its parent has changed
    # (rename or move)
    if (self.folderish
        and (self.remote_name != remote_info.name
             or self.remote_parent_ref != remote_info.parent_uid)):
        log.trace("Doc %s is a folder that has been renamed or moved,"
                  " set remote_state to 'modified'",
              self.remote_name)
        modified = True
    # Only consider a remote file for which the modification time has
    # changed as modified in the following cases:
    # - its name has changed (rename)
    # - its parent has changed (move)
    # - its content has changed (content update)
    # - its digest is different from the local one (can happen if
    # restored from the trash and content has been locally updated)
    if (not self.folderish
        and (self.remote_name != remote_info.name
             or self.remote_parent_ref != remote_info.parent_uid
             or self.remote_digest != remote_info.get_digest()
             or self.remote_digest != self.local_digest)):
        log.trace("Doc %s is a file that has been renamed, moved,"
                  " for which the content has been updated or restored"
                  " from the trash, set remote_state to 'modified'",
              self.remote_name)
        modified = True
    if modified:
        remote_state = 'modified'