File in use causes clone error (on Windows)

I'm assuming this is a Windows specific issue. I've cloned from github before on Windows with earlier versions of hg and hg-git, but ATM, this is failing (running hg-git 1.1.3 from source). I was able to work around this by cloning from WSL with hg 6.7.2 and the same hg-git source tree. mercurial.util.unlink() might be able to handle this better instead of os.remove().

C:\Users\Matt\projects\github> hg clone https://github.com/mharbison72/client_golang.git --config extensions.hggit=C:\Users\Matt\thg_installer\thg-build\hg-git\hggit client_golang_test --traceback
Traceback (most recent call last):
  File "mercurial.scmutil", line 152, in callcatch
    return func()
  File "mercurial.dispatch", line 446, in _runcatchfunc
    return _dispatch(req)
  File "mercurial.dispatch", line 1271, in _dispatch
    return runcommand(
  File "mercurial.dispatch", line 904, in runcommand
    ret = _runcommand(ui, options, cmd, d)
  File "mercurial.dispatch", line 1283, in _runcommand
    return cmdfunc()
  File "mercurial.dispatch", line 1269, in <lambda>
    d = lambda: util.checksignature(func)(ui, *args, **strcmdopt)
  File "mercurial.util", line 1878, in check
    return func(*args, **kwargs)
  File "mercurial.commands", line 1985, in clone
    r = hg.clone(
  File "C:\Users/Matt/thg_installer/thg-build/hg-git/hggit\schemes.py", line 119, in clone
    srcpeer, destpeer = orig(*args, **opts)
  File "mercurial.hg", line 1016, in clone
    exchange.pull(
  File "C:\Users/Matt/thg_installer/thg-build/hg-git/hggit\util.py", line 100, in inner
    return f(*args, **kwargs)
  File "C:\Users/Matt/thg_installer/thg-build/hg-git/hggit\gitrepo.py", line 195, in exchangepull
    pullop.cgresult = repo.githandler.fetch(remote, heads)
  File "C:\Users/Matt/thg_installer/thg-build/hg-git/hggit\git_handler.py", line 375, in fetch
    result = self.fetch_pack(remote.path, heads)
  File "C:\Users/Matt/thg_installer/thg-build/hg-git/hggit\git_handler.py", line 1634, in fetch_pack
    ret = self._call_client(
  File "contextlib", line 126, in __exit__
    next(self.gen)
  File "C:\Users/Matt/thg_installer/thg-build/hg-git/hggit\util.py", line 286, in add_pack
    os.remove(f.name)
PermissionError: [WinError 32] The process cannot access the file because it is being used by another process: 'C:\\Users\\Matt\\projects\\github\\client_golang_test\\.hg\\git\\objects\\pack\\hg-git-fetch-gjly74r7.pack'
abort: The process cannot access the file because it is being used by another process: 'C:\Users\Matt\projects\github\client_golang_test\.hg\git\objects\pack\hg-git-fetch-gjly74r7.pack'

C:\Users\Matt\projects\github> hg version -v --config extensions.hggit=C:\Users\Matt\thg_installer\thg-build\hg-git\hggit
Mercurial Distributed SCM (version 6.6.1)
(see https://mercurial-scm.org for more information)

Copyright (C) 2005-2023 Olivia Mackall and others
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Enabled extensions:

  absorb             internal
  blackbox           internal
  evolve             external  11.1.5.dev0
  extdiff            internal
  fastannotate       internal
  fix                internal
  hggit              external  unknown (dulwich 0.20.46)
  mercurial_keyring  external  1.4.3 (keyring 22.3.0, backend keyring.backends.Windows)
  phabblocker        external  20230202
  phabricator        internal
  rebase             internal
  show               internal
  strip              internal
  topic              external  1.1.5.dev0