v3 fails on windows when run before actions/checkout

[Jason Gross]

4s
Run ocaml/setup-ocaml@v3
  with:
    ocaml-compiler: 4.11.1
    opam-repositories: opam-repository-mingw: https://github.com/ocaml-opam/opam-repository-mingw.git#sunset
  default: https://github.com/ocaml/opam-repository.git
    allow-prerelease-opam: false
    opam-pin: true
    opam-local-packages: *.opam
    opam-disable-sandboxing: false
    dune-cache: false
    cache-prefix: v1
    github-token: ***
  env:
    OPAMYES: true
Change the file system behaviour parameters
  C:\Windows\system32\fsutil.exe behavior query SymlinkEvaluation
  Local-to-local symbolic link evaluation is: ENABLED
  Local-to-remote symbolic link evaluation is: ENABLED
  Remote-to-local symbolic link evaluation is: DISABLED
  Remote-to-remote symbolic link evaluation is: DISABLED
  C:\Windows\system32\fsutil.exe behavior set symlinkEvaluation R2L:1 R2R:1
  Remote-to-local symbolic link evaluation is: ENABLED
  Remote-to-remote symbolic link evaluation is: ENABLED
  C:\Windows\system32\fsutil.exe behavior query SymlinkEvaluation
  Local-to-local symbolic link evaluation is: ENABLED
  Local-to-remote symbolic link evaluation is: ENABLED
  Remote-to-local symbolic link evaluation is: ENABLED
  Remote-to-remote symbolic link evaluation is: ENABLED
Retrieve the opam cache
  Cache is not found for input keys: v1-setup-ocaml-cygwin-3.5.3, v1-setup-ocaml-cygwin-3.5.3
  Cache is not found for input keys: v1-setup-ocaml-opam-01722014753e0ac54c14091c6218aeec917299a6360d2919538cb623a15000d2, v1-setup-ocaml-opam-01722014753e0ac54c14091c6218aeec917299a6360d2919538cb623a15000d2
Prepare the Cygwin environment
  "C:\Program Files\Git\bin\git.exe" config --add --local core.excludesfile C:\Users\runneradmin\.config\git\ignore
  fatal: --local can only be used inside a git repository
Error: The process 'C:\Program Files\Git\bin\git.exe' failed with exit code 128

https://github.com/mit-plv/fiat-crypto/actions/runs/10257516037/job/28378695716