A 56-year-old man with a remote history of uncomplicated sigmoid diverticulitis presents with pneumaturia, fecaluria, and frequent urinary tract infections. Colonoscopy showed sigmoid diverticulosis. Computed tomography (CT) of the abdomen and pelvis showed air in the bladder. Cystoscopy showed 1.5 cm defect in the bladder. The best next step in the management of this patient is