What will be the major product of following sequence of reactions?

First step of the reaction involves acid base reaction to form $n - Bu - C ≡ {C}^{-}{Li}^{+}$.This is due to the presence of acidic hydrogen in the reactant Hex-1-yne.

Second step involves nucleophilic substitution to form a higher alkyne.

Third step involves hydrogenation of alkyne by using lindlar catalyst to form cis-alkene