Major Product of 1-Pentyne with HBr

In the context of organic chemistry, addition reactions are vital processes where multiple reactants combine to form a single product. One classic example of an addition reaction is the reaction of an alkene with hydrogen halides. Consider the addition of HBr to 1-butene, which results in the formation of 2-bromobutane.

What would be the major product if 1-pentyne undergoes an addition reaction with excess HBr? Remember that the reaction mechanism involves Markovnikov's rule and the formation of a carbocation intermediate.