The senior side may have lost three on the bounce, but the young Robins have flipped that form on its head by making it a hat-trick of victories to move above Cardiff into second.
Josh Owers scored the only goal of the game, coming moments into the second half when he finished from close range thanks to Prince Henry's low cross on the counter-attack.
It was a scrappy affair, with a few players threatening to lose their temper following some late challenges but in a game of little chances, City's defence came to the fore to ensure they showed the first-team how it's done by keeping a clean sheet.