Named on the bench to face Argentina this Saturday in Canberra, Koroibete will be hoping to help the Wallabies claim their first victory of the Rugby Championship.
With the Wallabies searching for their first win of the competition, coach Michael Cheika has made just one change to the starting side, elevating veteran lock Rob Simmons from the reserves.
Simmons will line-up in Canberra for his 75th Test cap alongside Adam Coleman with Rory Arnold left out of the match day squad.
Arnold, a mainstay of the Wallabies for the previous year, was dropped out of the 23-man squad entirely and will return to the Canberra Vikings to play in the NRC.
There was no recall for former captain Stephen Moore, who missed the Springboks Test after the birth of his third child.
Former National Rugby League wing Koroibete was also named among the replacements and is set to become the 10th Wallabies debutant this year.
In 2017, Koroibete converted to rugby union and played for the Melbourne Rebels, where he scored six tries in 13 games.
Koroibete took the no.23 jersey from fellow code-hopper Curtis Rona.
The Wallabies, who are third in the Rugby Championship, have won their past four games against the Pumas.