feat: rename rekor flag

Signed-off-by: Vishal Choudhary <sendtovishalchoudhary@gmail.com>

cmd/cosign/cli/attach/sig.go

@@ -97,7 +97,7 @@ func SignatureCmd(ctx context.Context, regOpts options.RegistryOptions, sigRef,
 			return err
 		}
 	}
-	TSBundle := bundle.TimestampToRFC3161Timestamp(timeStampedSig)
+	tsBundle := bundle.TimestampToRFC3161Timestamp(timeStampedSig)
 
 	if rekorBundleRef != "" {
 		rekorBundleByte, err := os.ReadFile(filepath.Clean(rekorBundleRef))
@@ -114,7 +114,7 @@ func SignatureCmd(ctx context.Context, regOpts options.RegistryOptions, sigRef,
 		rekorBundle = localCosignPayload.Bundle
 	}
 
-	newSig, err := mutate.Signature(sig, mutate.WithCertChain(cert, certChain), mutate.WithRFC3161Timestamp(TSBundle), mutate.WithBundle(rekorBundle))
+	newSig, err := mutate.Signature(sig, mutate.WithCertChain(cert, certChain), mutate.WithRFC3161Timestamp(tsBundle), mutate.WithBundle(rekorBundle))
 	if err != nil {
 		return err
 	}

cmd/cosign/cli/options/attach.go

@@ -58,7 +58,7 @@ func (o *AttachSignatureOptions) AddFlags(cmd *cobra.Command) {
 			"signing certificate and end with the root certificate. Included in the OCI Signature")
 	cmd.Flags().StringVar(&o.TimeStampedSig, "tsr", "",
 		"path to the Time Stamped Signature Response from RFC3161 compliant TSA")
-	cmd.Flags().StringVar(&o.RekorBundle, "rekor", "",
+	cmd.Flags().StringVar(&o.RekorBundle, "rekor-response", "",
 		"path to the rekor bundle")
 }