ModTime:    expPart.ModTime,
			Index:      expPart.Index,
			Checksums:  nil, // Not transferred since we do not need it.
		}
	}

	if opts.WantChecksum != nil {
		err := opts.WantChecksum.Matches(checksumCombined)
		if err != nil {
			return oi, err
		}
	}

	// Hold namespace to complete the transaction
	lk := er.NewNSLock(bucket, object)