From the publication, their diet "includes foraged tubers, berries, honey, and hunted animals."[1]

Their microbiome is more diverse, with "23.4% of microbial species detected in the Hadza infants represent[ing] novel species"[2].

1. https://www.cell.com/cell/fulltext/S0092-8674(23)00597-4

2. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9894631/