Lack of support for GITHUB_SERVER_URL with subpath

[Indeedornot]

Currently this action does not support GITHUB_SERVER_URL with subpath; In this case I am using this for gitea which I am hosting through Nginx subpath /gitea/.

However getFetchUrl in the code uses serverUrl.origin stripping the /gitea/ and making my actions fail.

Possible solution is not cleaning the path specified in input that way I can do and it should work by trusting the user given url

    steps:
      - name: Checkout code
        uses: actions/checkout@v2
        with:
          fetch-depth: 0
          path: main
          github-server-url: ${{ secrets.GITHUB_SERVER_URL }}

[joshmgross]

This is not something we plan to support at this time - see #1242 (comment)