}

	newChunkHdr := fmt.Appendf(nil, "%s"+s3ChunkSignatureStr+"%s\r\n",
		hexChunkSize, chunkSignature)
	newChunk, err := io.ReadAll(bufReader)
	if err != nil {
		return nil, err
	}
	newReq := req
	newReq.Body = io.NopCloser(
		bytes.NewReader(bytes.Join([][]byte{newChunkHdr, newChunk[:len(newChunk)/2]},
			[]byte(""))),
	)
	return newReq, nil
}