I stutter with my name, too! Honestly, just take a deep breath, and say your name and just "Sorry, I stutter with my name" and move on. If you don't pull focus to it, they won't dwell on it. If they ask you to repeat yourself, just spell it out instead. Even people who down regularly stutter still stutter sometimes, especially with job interview stuff. I've stuttered in every job interview ever, you've got this.