// this changes for encryption which can be observed below.
	if cpSrcDstSame {
		srcInfo.metadataOnly = true
	}

	var chStorageClass bool
	if dstSc != "" && dstSc != srcInfo.StorageClass {
		chStorageClass = true
		srcInfo.metadataOnly = false
	} // no changes in storage-class expected so its a metadataonly operation.

	var reader io.Reader = gr

			}
		case "ms":
			z.MaxSize, err = dc.ReadInt64()
			if err != nil {
				err = msgp.WrapError(err, "MaxSize")
				return
			}
		case "mo":
			z.MetadataOnly, err = dc.ReadBool()
			if err != nil {
				err = msgp.WrapError(err, "MetadataOnly")
				return
			}
		case "ab":
			z.AbortOn404, err = dc.ReadBool()
			if err != nil {
				err = msgp.WrapError(err, "AbortOn404")
				return
			}