I'm not trying to be a jerk but seriously, what religion doesn't have racist origins? I mean, even a tribe 5,000 years ago probably were racist against other tribes or whatever.
You're doing a great job for not even trying.
There’s a difference between tribalism and racism. The ancient Israelites believed their tribe was God’s chosen people. They had no greater antipathy to tribes that looked very different from them than to those that looked almost the same. Even this rather mild tribalism was utterly rejected by the New Testament, and BTW, by the Koran.
The idea that man is divided into three to five great “races,” with vast differences between the races (with some being closer to the animals) and great commonality within them, actually dates back only to early modern times and has little or no history prior to that.
Christianity in and of itself does not have racist origins. There are plenty of churches and denominations or non-denominational churches to choose from.