}
		opts.WantChecksum = hashReader.Checksum()
	}

	rawReader := hashReader
	pReader := NewPutObjReader(rawReader)
	opts.IndexCB = idxCb

	if r.Header.Get(xhttp.IfMatch) != "" {
		opts.HasIfMatch = true
	}
	if opts.PreserveETag != "" ||
		r.Header.Get(xhttp.IfMatch) != "" ||
		r.Header.Get(xhttp.IfNoneMatch) != "" {
		opts.CheckPrecondFn = func(oi ObjectInfo) bool {