Hello Sagar!
The workaround is to override the url being used using the withUrl
method. It will look something like this:
var result = graphClient.drives().byDriveId("{drive-id}").items().byDriveItemId("{driveItem-id}").delta().withUrl("https://graph.microsoft.com/v1.0/drives/{drive-id}/delta?token=timestamp").get();