Just living in equatorial Africa would have let to, at least, big brimmed hats, irrespective of magnetic field shifts.
Right, and equatorial Africa would have been green, wet, and thriving at this moment.
Even so, they would have been only briefly puzzled at the sub-optimally clothed dropping dead from skin cancer before their 20s; and expressly moved north in haste, kept moving through the Levant, and right into the Caucasus. From there dispersing east and west in search of clouds, game, and caves.