Attestations for
  ghcr.io/boks-sh/diffutils@sha256:ef90da5ade8d7e62bc1478ca9ccedd9dcb16503e0d3ac12db52c4c7013a666e3

Verify them yourself:
  cosign verify-attestation --key cosign.pub \
      --type <cyclonedx|slsaprovenance> ghcr.io/boks-sh/diffutils@sha256:ef90da5ade8d7e62bc1478ca9ccedd9dcb16503e0d3ac12db52c4c7013a666e3

=== cyclonedx ===================================================
  (no attestation matches the document published now -- 1 older one(s) are attached)

=== slsaprovenance ==============================================
  (no attestation matches the document published now -- 1 older one(s) are attached)