Jock was a starter for the Australian Boomers in the 2019 World Cup and the 2021 Olympic Games. He was a key member of the Boomers team that won a bronze medal at the 2020 Tokyo Olympics; that was the program’s first top-three finish in a major international tournament. Jock averaged 12.8 points, 4.7 rebounds, and 2.2 assists per game at the Tokyo Olympics.

Jock narrowly missed out on the 2023 World Cup, as he suffered an injury forcing him to pull out of the tournament 5 days prior to its opening game.