Complex sentence: The sketch involves a group of stereotypical "ocker" Australians of the period, all wearing khakis and cork hats, who are all named Bruce, hence being known as "the Bruces".
Split into simpler sentences: The sketch involves a group of stereotypical "ocker" Australians of the period, who are all wearing khakis and cork hats. All are named Bruce, hence being known as "the Bruces".