override GITHUB_WORKSPACE

Signed-off-by: Brian DeHamer <[email protected]>

Author: bdehamer

.github/workflows/conformance.yml

@@ -27,6 +27,8 @@ jobs:
     - name: Build sigstore-js
       run: npm run build
     - uses: sigstore/sigstore-conformance@63fbf5b0118e007a907f2b44a4530bb45ce58eb3
+      env:
+        GITHUB_WORKSPACE: '/tmp'
       with:
         entrypoint: ${{ github.workspace }}/packages/conformance/bin/run
         xfail: "test_verify_with_trust_root test_verify_cpython_release_bundles"