This is a classic George Shuffler kick off for Worried Man Blues, as made famous by The Stanley Brothers. I learned this break from James Stiltner’s YouTube channel. He knows more of these classic breaks than I can possibly transcribe, I highly recommend checking out his YouTube channel.
(Advanced guitar tabs generally include a very ornamented version of the melody, chord markings above (with extra extensions and variations), kick-offs, tags, and improvisation that drifts far from the melody at hand. Expect to come across hammer-ons, pull-offs, slides and more in all kinds of combinations as well as syncopation, triplets and other rhythmic challenges. These tabs are excellent if you want to get inside the head of another improviser and explore the choices that an advanced flatpicker might consider.)