How to rotate Motor6D instead of body part with CFrame?

game:GetService("RunService").RenderStepped:connect(function()

	Head.C0 = CFrame.new(Head.Position, Vector3.new(Mouse.Hit.p.x, Head.Position.Y, Mouse.Hit.p.z))

end)

This script rotates the Head (and the rest of the body) towards the camera but I want to rotate the Motor6D (Neck). But this script seems like can't rotate Motor6D.