All the races sprang from Africa. Through DNA tracking, that has been verified.
The most prominent hypothesis until 2018 was that there was a single African hominid, a female they call Eve (for obvious reasons) who began our line of homo sapiens.
But in 2018 a group of researchers have proposed a more mosaic model for the origin of all our races. That is, there were tribes of hominids scattered around the entire continent of Africa. And early on they were kept from finding each other.
But eventually the environment changed, rivers dried up, forests died away, etc. And the tribes began to find each other and intermingle and interbreed. And that's where homo sapiens emerged from. [See source.]
So while we may have a common ancestor, they have not traced back to that ancestor that may or may not have existed prior to the existence of those early African tribes. For all they know at this time the multiple primitive tribes might have sprung up independently rather than derived from a single Eve.