chromium/third_party/blink/web_tests/svg/clip-path/clip-in-clip.svg

<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">

<defs>
  <clipPath id="clipper" clip-path="url(#nested-clipper)">
    <rect x="10" y="19" width="20" height="11" />
  </clipPath>
  
  <clipPath id="nested-clipper">
    <rect x="10" y="10" width="20" height="11" />
  </clipPath>
  
</defs>

<g clip-path="url(#clipper)">
  <rect fill="red" x="8" y="8" width="24" height="24" />
  <rect fill="green" x="10" y="19" width="20" height="2" />
</g>

</svg>