Digger github action seems broken since today

[mtparet]

Hello,

We are using digger (opentaco) with opentofu and github actions since several weeks but today it stopped working, we have errors in our github actions.

When lauching locally opentofu it still works correctly.

time=2025-11-20T19:05:18.292Z level=INFO msg="Initializing plan storage" destination="" owner=XXXX repo=XXX
time=2025-11-20T19:05:18.292Z level=WARN msg="Unknown plan upload destination, using mock storage" destination=""
time=2025-11-20T19:05:18.292Z level=WARN msg="warning: nil passed to plan result, sending empty"
time=2025-11-20T19:05:18.818Z level=ERROR msg="Failed to report jobSpec status to backend. Exiting. unexpected status when reporting a project job status: 404"
time=2025-11-20T19:05:18.818Z level=WARN msg="warning: nil passed to plan result, sending empty"

Any idea what I could check / any others logs to understand what is happening ?

Best,

[UtpalJayNadiger]

Hi @mtparet - sorry about this, we're taking a look!

[motatoes]

hey @mtparet sorry for that, any chance you could also share what your digger.yml and digger_workflow.yml looks like in that PR ?

if you are also able to share with me a dump of the action logs in slack (or on here) that would be helpful to check that out

[mtparet]

Hi @motatoes , yes of course! Thanks!

[Roberdvs]

In case it helps, just wanted to mention that Digger actions started to fail for us today after upgrading the checkout action to v6. It seems to have broken the git auth that digger assumed was already done by the checkout action.

Although the error log is different from OP so maybe not related to this issue.

  Error: fatal: unable to access 'https://github.com/**redacted**/': The requested URL returned error: 400
  The process '/usr/bin/git' failed with exit code 128
  Waiting 13 seconds before trying again
  /usr/bin/git -c protocol.version=2 fetch --no-tags --prune --no-recurse-submodules --depth=1 origin +78bffe3e01837c43323d49c750d1a3bbde80b766:refs/remotes/origin/**redacted**
  remote: Duplicate header: "Authorization"
  Error: fatal: unable to access 'https://github.com/**redacted**/': The requested URL returned error: 400
  Error: The process '/usr/bin/git' failed with exit code 128

This is our workflow:

    steps:
      - uses: actions/checkout@v6
      - name: ${{ fromJSON(github.event.inputs.spec).job_id }}
        run: echo "job id ${{ fromJSON(github.event.inputs.spec).job_id }}"
      # Workaround to allow Terraform to download private modules hosted in this same repo while Digger implements support for it
      # See https://github.com/diggerhq/digger/issues/296#issuecomment-2648049731
      - name: Set git config
        run: |
          /usr/bin/git config --global --add url."https://github:${{ secrets.GITHUB_TOKEN }}@github.com/${{ github.repository_owner }}".insteadOf https://github.com/${{ github.repository_owner }}
      - name: digger run
        uses: diggerhq/digger@v0.6.137
        with:
          digger-spec: ${{ inputs.spec }}
          setup-opentofu: true
          opentofu-version: 1.10.5
          setup-aws: true
          aws-role-to-assume: arn:aws:iam::**redacted**:role/digger
          aws-region: eu-west-1
          reporting-strategy: multiple_comments
        env:
          GITHUB_CONTEXT: ${{ toJson(github) }}
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

Reverting checkout to v5 fixed the problem.

For reference, something similar is happening to the create-pull-request action: peter-evans/create-pull-request#4228

[mtparet]

Seems working again without any changes