Charmaine Holmes, 17, pled guilty yesterday at Glasgow Sheriff Court to the assault on PC Clare Connelly on December 6, 2013 at Ballater Street.
She was accused of biting the officer on the arm but pled guilty when the charge was changed to headbutting her arm. She also admitted breaching bail.
Sentence was deferred until later this month and her bail was continued.
Holmes pled guilty to breaking into the Clutha with three others and stealing alcohol and cash weeks after 10 people tragically lost their lives.
The teenager was given a community payback order for 18 months with the condition she will be supervised.