chore: stochastic gradient descent to fix goheader (#196)

## Why this should be merged

Avoids false positives from `goheader`.

## How this works

Checks out entire history to give the linter a reference point for new
issues only.

## How this was tested

With great frustration by waiting for CI.

.github/workflows/lint.yml

@@ -30,6 +30,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0 # Required for go-header check https://github.com/golangci/golangci-lint/issues/2470#issuecomment-1473658471
       - uses: actions/setup-go@v5
         with:
           go-version-file: "go.mod"