Mirror animation to have two character doing same thing mirrored by floor

Hi, I have two models, exactly same and an animation controller attached to one. I want the second model to follow same animation but mirrored to the floor. Think "the second character is walking upside down below the floor". Transformation can be controlled by script by me but not the animation. One way is to copy the "animation sequence running and its normalized playback time" from one's animator and paste it to other, on update. But i do not know how! I can get the normalized time but can not set on the other. Any suggestions!