In SVG, holes can be defined with a different clockwise direction than the outline. For example, in the path below, the outline is clockwise M0 0 L100 0 L100 100 L0 100 Z, and the two subsequent holes are counterclockwise:

M0 0 L100 0 L100 100 L0 100 Z M50 50 L50 75 L75 75 L75 50 Z M25 25 L25

You can also reverse the clockwise direction in your definition, for example: Draw a hollow circle in SVG. The key is that the hole's direction should be opposite to the outline's direction.