Attestations for
  ghcr.io/boks-sh/go@sha256:021d64477e5fe7ce00e7e159a63da1015c40e962a9455af4f89c4103f80309df

Verify them yourself:
  cosign verify-attestation --key cosign.pub \
      --type <cyclonedx|slsaprovenance> ghcr.io/boks-sh/go@sha256:021d64477e5fe7ce00e7e159a63da1015c40e962a9455af4f89c4103f80309df

=== cyclonedx ===================================================
  (no attestation matches the document published now -- 0 older one(s) are attached)

=== slsaprovenance ==============================================
  (no attestation matches the document published now -- 0 older one(s) are attached)