how can i fix my coolant pipe in my opel corsa 1ltr engine?

the car has had its service and additional work done to it. due its nct soon so needs to be in good shape. water is leaking from the pipe that leads to the coolant. I can only go on very short journeys as the water is gone out of the coolant in a matter of 10mins with steam rising along with a burning rubbery smell. i am worried in case i damage the engine so not driving it as much. it is a dealer part which needs to be ordered so don't know how long it will take. have to bring the car back to the garage in the morning. in the meantime is there anything that i could patch it with while i'm waiting for the hose? have been told it could take up to a week for replacement.