diff --git a/go.mod b/go.mod
index a3ba0ad..4c6a9a8 100644
--- a/go.mod
+++ b/go.mod
@@ -2,4 +2,7 @@ module github.com/sluongng/git-cache
 
 go 1.16
 
-require github.com/matryer/is v1.4.0 // indirect
+require (
+	github.com/google/gitprotocolio v0.0.0-20210704173409-b5a56823ae52
+	github.com/matryer/is v1.4.0
+)
diff --git a/go.sum b/go.sum
index ddd6bbf..0e0d29a 100644
--- a/go.sum
+++ b/go.sum
@@ -1,2 +1,4 @@
+github.com/google/gitprotocolio v0.0.0-20210704173409-b5a56823ae52 h1:/a887PZoXM9aLYwXS2ufq+Gnr5KUg5gm8gBoxKjnQuo=
+github.com/google/gitprotocolio v0.0.0-20210704173409-b5a56823ae52/go.mod h1:O2KL6wjnwAu7+dPSZhhrjp35gFdyoHlP/f6dhc9YupY=
 github.com/matryer/is v1.4.0 h1:sosSmIWwkYITGrxZ25ULNDeKiMNzFSr4V/eqBQP0PeE=
 github.com/matryer/is v1.4.0/go.mod h1:8I/i5uYgLzgsgEloJE1U6xx5HkBQpAZvepWuujKwMRU=
diff --git a/handler.go b/handler.go
index 8f21827..268f676 100644
--- a/handler.go
+++ b/handler.go
@@ -1,10 +1,15 @@
 package main
 
 import (
+	"bytes"
+	"encoding/json"
+	"io"
 	"log"
 	"net/http"
 	"net/http/httputil"
 	"net/url"
+
+	"github.com/google/gitprotocolio"
 )
 
 const (
@@ -38,7 +43,41 @@ func (s *server) ReceivePackHandler() http.HandlerFunc {
 //   - git-archive
 func (s *server) UploadPackHandler() http.HandlerFunc {
 	log.Println("UploadPackHandler")
-	return s.proxyHandler()
+	return func(w http.ResponseWriter, r *http.Request) {
+		proxyHandler := s.proxyHandler()
+
+		// Middleware layer
+		b, err := io.ReadAll(r.Body)
+		if err != nil {
+			log.Fatalln("Unable to read body: %w", err)
+		}
+		r.Body = io.NopCloser(bytes.NewReader(b))
+
+		scanner := gitprotocolio.NewProtocolV2Request(bytes.NewReader(b))
+		for {
+			if ok := scanner.Scan(); !ok {
+				if scanner.Err() != nil {
+					log.Printf("Unable to scan request: %s\n", scanner.Err())
+				}
+
+				break
+			}
+
+			c := scanner.Chunk()
+
+			data, err := json.MarshalIndent(c, "", " ")
+			if err != nil {
+				log.Fatalln("Unable to unmarshal chunk: %w", err)
+			}
+			log.Printf("chunk: %s", string(data))
+
+			if c.EndRequest {
+				break
+			}
+		}
+
+		proxyHandler(w, r)
+	}
 }
 
 func (s *server) proxyHandler() http.HandlerFunc {