OM Extension_Groovy Script_Can we check hold is there on original order

I have a sales order 'Order1' With hold "HOLD1" at header Level and submitted for fulfillment.

Now i want to update the quantity on SO line, so created a revision for the same i.e. qty updated from 1 to 2 and submitted.

In OM Extension Script(start of submission request) I need to check whether my initial Order is having 'HOLD1' or not . Could you please provide a workaround to check the same.