submodule recursive fails to clone using http

[aminya]

Here is the error:

https://github.com/aminya/build2-toolchain/runs/1506543807?check_suite_focus=true#step:6:182

Error: fatal: dumb http transport does not support shallow capabilities
  Error: fatal: clone of 'https://git.savannah.gnu.org/r/config.git' into submodule path '/home/runner/work/build2-toolchain/build2-toolchain/build2/config' failed

Here is the config:
https://github.com/aminya/build2-toolchain/blob/a0d6e01cb63abca5250981084a7f03c0fa5f2856/.github/workflows/ci.yml#L56

    - name: Checkout master branch
      uses: actions/checkout@v2
      with:
        repository: 'build2/build2-toolchain'
        submodules: recursive

[ericsciple]

it looks like it's not supported by the external provider. You may need to set fetch-depth: 0

[aminya]

Thanks! Setting fetch-deps to 0 fixes the issue