git node wpt only updates or creates files, doesn't remove them

[panva]

$ git node wpt streams                                                 
----------------------- Checking updates for streams... ------------------------
Last local update for streams is 9e5ef42bd34b
✔  Last update in upstream is 51750bc8d749
---------------- Writing assets to test/fixtures/wpt/streams... ----------------
✔  Read asset list, 94 files in total.
✔  Downloaded 94 assets.
✔  Updated test/fixtures/wpt/versions.json
✔  Updated test/fixtures/wpt/README.md
✔  Updated test/fixtures/wpt/LICENSE.md.

➜  $ git status
On branch main
Your branch is ahead of 'origin/main' by 82 commits.
  (use "git push" to publish your local commits)

Changes not staged for commit:
  (use "git add <file>..." to update what will be committed)
  (use "git restore <file>..." to discard changes in working directory)
	modified:   test/fixtures/wpt/README.md
	modified:   test/fixtures/wpt/streams/readable-streams/garbage-collection.any.js
	modified:   test/fixtures/wpt/streams/resources/test-utils.js
	modified:   test/fixtures/wpt/versions.json

Untracked files:
  (use "git add <file>..." to include in what will be committed)
	test/fixtures/wpt/streams/readable-byte-streams/enqueue-with-detached-buffer.any.js
	test/fixtures/wpt/streams/transferable/gc-crash.html

no changes added to commit (use "git add" and/or "git commit -a")

This correctly adds test/fixtures/wpt/streams/readable-byte-streams/enqueue-with-detached-buffer.any.js but doesn't remove test/fixtures/wpt/streams/readable-byte-streams/enqueue-with-detached-buffer.window.js which the aforementioned was renamed to.