Apparently it's not a painting:

> The artwork, commissioned in 2016, is rendered in metal mesh by renowned South Korean artist Seungmo Park. Park also created a larger-than-life depiction of Olympic sprinter Sebastian Coe for Nike’s headquarters in Oregon and the façade of Gucci’s flagship store in Seoul.

I noticed the texture looked odd when I zoomed into the photo. I suspect Park did the best he could, but the medium itself seems poorly-suited for the vision.