diff --git a/client/upload_pack.go b/client/upload_pack.go
index 65d81746e988a164f00b05571f386d36d3f8727b..1e907d78a339bb1c86be1ac4b4a1831244603c1f 100644
--- a/client/upload_pack.go
+++ b/client/upload_pack.go
@@ -44,6 +44,7 @@ func UploadPack(ctx context.Context, conn *grpc.ClientConn, stdin io.Reader, std
 // UploadPackResult wraps ExitCode and PackfileNegotiationStatistics.
 type UploadPackResult struct {
 	ExitCode                      int32
+	ResponseBytes                 int64
 	PackfileNegotiationStatistics *gitalypb.PackfileNegotiationStatistics
 }
 
@@ -75,6 +76,7 @@ func UploadPackWithSidechannelWithResult(
 		return result, err
 	}
 	result.ExitCode = 0
+	result.ResponseBytes = resp.GetBytes()
 	result.PackfileNegotiationStatistics = resp.PackfileNegotiationStatistics
 
 	if err := wt.Close(); err != nil {
diff --git a/internal/gitaly/service/ssh/upload_pack.go b/internal/gitaly/service/ssh/upload_pack.go
index c5815536a16e65237e8154398e25dce2f143c8a6..e3c8b45ce4f7bc62707dcff9d3f221d10ab1ca97 100644
--- a/internal/gitaly/service/ssh/upload_pack.go
+++ b/internal/gitaly/service/ssh/upload_pack.go
@@ -56,7 +56,7 @@ func (s *server) SSHUploadPack(stream gitalypb.SSHService_SSHUploadPackServer) e
 		return stream.Send(&gitalypb.SSHUploadPackResponse{Stderr: p})
 	})
 
-	if _, status, err := s.sshUploadPack(ctx, req, stdin, stdout, stderr); err != nil {
+	if _, _, status, err := s.sshUploadPack(ctx, req, stdin, stdout, stderr); err != nil {
 		if errSend := stream.Send(&gitalypb.SSHUploadPackResponse{
 			ExitStatus: &gitalypb.ExitStatus{Value: int32(status)},
 		}); errSend != nil {
@@ -75,7 +75,7 @@ type sshUploadPackRequest interface {
 	GetGitProtocol() string
 }
 
-func (s *server) sshUploadPack(rpcContext context.Context, req sshUploadPackRequest, stdin io.Reader, stdout, stderr io.Writer) (negotiation *stats.PackfileNegotiation, _ int, _ error) {
+func (s *server) sshUploadPack(rpcContext context.Context, req sshUploadPackRequest, stdin io.Reader, stdout, stderr io.Writer) (negotiation *stats.PackfileNegotiation, _ int64, _ int, _ error) {
 	ctx, cancelCtx := context.WithCancel(rpcContext)
 	defer cancelCtx()
 
@@ -86,14 +86,14 @@ func (s *server) sshUploadPack(rpcContext context.Context, req sshUploadPackRequ
 	repo := req.GetRepository()
 	repoPath, err := s.locator.GetRepoPath(repo)
 	if err != nil {
-		return nil, 0, err
+		return nil, 0, 0, err
 	}
 
 	git.WarnIfTooManyBitmaps(ctx, s.locator, repo.StorageName, repoPath)
 
 	config, err := git.ConvertConfigOptions(req.GetGitConfigOptions())
 	if err != nil {
-		return nil, 0, err
+		return nil, 0, 0, err
 	}
 
 	var wg sync.WaitGroup
@@ -135,7 +135,7 @@ func (s *server) sshUploadPack(rpcContext context.Context, req sshUploadPackRequ
 		Args: []string{repoPath},
 	}, commandOpts...)
 	if err != nil {
-		return nil, 0, err
+		return nil, 0, 0, err
 	}
 
 	timeoutTicker := s.uploadPackRequestTimeoutTickerFactory()
@@ -160,7 +160,7 @@ func (s *server) sshUploadPack(rpcContext context.Context, req sshUploadPackRequ
 		// We thus need to special-case the situation where we cancel our own context in
 		// order to provide that information and return a proper gRPC error code.
 		if ctx.Err() != nil && rpcContext.Err() == nil {
-			return nil, status, structerr.NewDeadlineExceeded("waiting for packfile negotiation: %w", ctx.Err())
+			return nil, 0, status, structerr.NewDeadlineExceeded("waiting for packfile negotiation: %w", ctx.Err())
 		}
 
 		// A common error case is that the client is terminating the request prematurely,
@@ -173,15 +173,15 @@ func (s *server) sshUploadPack(rpcContext context.Context, req sshUploadPackRequ
 		// Note that we're being quite strict with how we match the error for now. We may
 		// have to make it more lenient in case we see that this doesn't catch all cases.
 		if stderrBuilder.String() == "fatal: the remote end hung up unexpectedly\n" {
-			return nil, status, structerr.NewCanceled("user canceled the fetch")
+			return nil, 0, status, structerr.NewCanceled("user canceled the fetch")
 		}
 
-		return nil, status, fmt.Errorf("cmd wait: %w, stderr: %q", err, stderrBuilder.String())
+		return nil, 0, status, fmt.Errorf("cmd wait: %w, stderr: %q", err, stderrBuilder.String())
 	}
 
 	ctxlogrus.Extract(ctx).WithField("response_bytes", stdoutCounter.N).Info("request details")
 
-	return nil, 0, nil
+	return nil, stdoutCounter.N, 0, nil
 }
 
 func validateFirstUploadPackRequest(locator storage.Locator, req *gitalypb.SSHUploadPackRequest) error {
@@ -213,7 +213,8 @@ func (s *server) SSHUploadPackWithSidechannel(ctx context.Context, req *gitalypb
 	sidebandWriter := pktline.NewSidebandWriter(conn)
 	stdout := sidebandWriter.Writer(stream.BandStdout)
 	stderr := sidebandWriter.Writer(stream.BandStderr)
-	stats, _, err := s.sshUploadPack(ctx, req, conn, stdout, stderr)
+
+	stats, responseBytes, _, err := s.sshUploadPack(ctx, req, conn, stdout, stderr)
 	if err != nil {
 		return nil, structerr.NewInternal("%w", err)
 	}
@@ -223,5 +224,6 @@ func (s *server) SSHUploadPackWithSidechannel(ctx context.Context, req *gitalypb
 
 	return &gitalypb.SSHUploadPackWithSidechannelResponse{
 		PackfileNegotiationStatistics: stats.ToProto(),
+		Bytes:                         responseBytes,
 	}, nil
 }
diff --git a/internal/gitaly/service/ssh/upload_pack_test.go b/internal/gitaly/service/ssh/upload_pack_test.go
index ba969f14f45394ef304824355ca5b8c0126810b9..2b68bb4c7697cf1bae26f902cdde5f26855c06ca 100644
--- a/internal/gitaly/service/ssh/upload_pack_test.go
+++ b/internal/gitaly/service/ssh/upload_pack_test.go
@@ -12,6 +12,7 @@ import (
 	"testing"
 	"time"
 
+	"github.com/google/go-cmp/cmp"
 	"github.com/prometheus/client_golang/prometheus"
 	promtest "github.com/prometheus/client_golang/prometheus/testutil"
 	"github.com/stretchr/testify/require"
@@ -33,6 +34,7 @@ import (
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/credentials/insecure"
 	"google.golang.org/protobuf/encoding/protojson"
+	"google.golang.org/protobuf/testing/protocmp"
 )
 
 func runTestWithAndWithoutConfigOptions(t *testing.T, tf func(t *testing.T, opts ...testcfg.Option), opts ...testcfg.Option) {
@@ -203,6 +205,7 @@ func TestUploadPackWithSidechannel_client(t *testing.T) {
 					Caps:    []string{"multi_ack"},
 					Wants:   1,
 				},
+				Bytes: int64(1), // This number can change so we assert it's at least 1 byte
 			},
 		},
 		{
@@ -229,6 +232,7 @@ func TestUploadPackWithSidechannel_client(t *testing.T) {
 					Packets: 5,
 					Wants:   1,
 				},
+				Bytes: int64(1), // This number can change so we assert it's at least 1 byte
 			},
 		},
 		{
@@ -324,6 +328,7 @@ func TestUploadPackWithSidechannel_client(t *testing.T) {
 			},
 			expectedResponse: &gitalypb.SSHUploadPackWithSidechannelResponse{
 				PackfileNegotiationStatistics: &gitalypb.PackfileNegotiationStatistics{},
+				Bytes:                         int64(1), // This number can change so we assert it's at least 1 byte
 			},
 		},
 		{
@@ -432,7 +437,13 @@ func TestUploadPackWithSidechannel_client(t *testing.T) {
 				// The payload size is not deterministic(it's a different value in local-test end ci-test), so we set it to the expected value.
 				tc.expectedResponse.PackfileNegotiationStatistics.PayloadSize = response.PackfileNegotiationStatistics.PayloadSize
 			}
-			testhelper.ProtoEqual(t, tc.expectedResponse, response)
+
+			// The Bytes field's size can vary, so let's simply assert there's at least 1 byte
+			opt := protocmp.FilterField(new(gitalypb.SSHUploadPackWithSidechannelResponse), "bytes", cmp.Comparer(func(bytes, expectedBytes int64) bool {
+				return expectedBytes > 0
+			}))
+
+			testhelper.ProtoEqual(t, tc.expectedResponse, response, opt)
 		})
 	}
 }
diff --git a/proto/go/gitalypb/ssh.pb.go b/proto/go/gitalypb/ssh.pb.go
index 0ba215d39254abf97f8ae51232ecb5742de3eb80..ed401e7abe18fd79336e1fcb4571872b479ea1ba 100644
--- a/proto/go/gitalypb/ssh.pb.go
+++ b/proto/go/gitalypb/ssh.pb.go
@@ -239,6 +239,8 @@ type SSHUploadPackWithSidechannelResponse struct {
 
 	// Packfile negotiation statistics.
 	PackfileNegotiationStatistics *PackfileNegotiationStatistics `protobuf:"bytes,1,opt,name=packfile_negotiation_statistics,json=packfileNegotiationStatistics,proto3" json:"packfile_negotiation_statistics,omitempty"`
+	// The number of response bytes
+	Bytes int64 `protobuf:"varint,2,opt,name=bytes,proto3" json:"bytes,omitempty"`
 }
 
 func (x *SSHUploadPackWithSidechannelResponse) Reset() {
@@ -280,6 +282,13 @@ func (x *SSHUploadPackWithSidechannelResponse) GetPackfileNegotiationStatistics(
 	return nil
 }
 
+func (x *SSHUploadPackWithSidechannelResponse) GetBytes() int64 {
+	if x != nil {
+		return x.Bytes
+	}
+	return 0
+}
+
 // This comment is left unintentionally blank.
 type SSHReceivePackRequest struct {
 	state         protoimpl.MessageState
@@ -616,7 +625,7 @@ var file_ssh_proto_rawDesc = []byte{
 	0x52, 0x10, 0x67, 0x69, 0x74, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x4f, 0x70, 0x74, 0x69, 0x6f,
 	0x6e, 0x73, 0x12, 0x21, 0x0a, 0x0c, 0x67, 0x69, 0x74, 0x5f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x63,
 	0x6f, 0x6c, 0x18, 0x03, 0x20, 0x01, 0x28, 0x09, 0x52, 0x0b, 0x67, 0x69, 0x74, 0x50, 0x72, 0x6f,
-	0x74, 0x6f, 0x63, 0x6f, 0x6c, 0x22, 0x95, 0x01, 0x0a, 0x24, 0x53, 0x53, 0x48, 0x55, 0x70, 0x6c,
+	0x74, 0x6f, 0x63, 0x6f, 0x6c, 0x22, 0xab, 0x01, 0x0a, 0x24, 0x53, 0x53, 0x48, 0x55, 0x70, 0x6c,
 	0x6f, 0x61, 0x64, 0x50, 0x61, 0x63, 0x6b, 0x57, 0x69, 0x74, 0x68, 0x53, 0x69, 0x64, 0x65, 0x63,
 	0x68, 0x61, 0x6e, 0x6e, 0x65, 0x6c, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x12, 0x6d,
 	0x0a, 0x1f, 0x70, 0x61, 0x63, 0x6b, 0x66, 0x69, 0x6c, 0x65, 0x5f, 0x6e, 0x65, 0x67, 0x6f, 0x74,
@@ -625,78 +634,79 @@ var file_ssh_proto_rawDesc = []byte{
 	0x2e, 0x50, 0x61, 0x63, 0x6b, 0x66, 0x69, 0x6c, 0x65, 0x4e, 0x65, 0x67, 0x6f, 0x74, 0x69, 0x61,
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 }
 
 var (
diff --git a/proto/ssh.proto b/proto/ssh.proto
index afe3e70d8325e156ff9801adb3f6cf0b8297e82b..1e5739251292cb31c47e5095e7cf53eb1f38d870 100644
--- a/proto/ssh.proto
+++ b/proto/ssh.proto
@@ -81,6 +81,8 @@ message SSHUploadPackWithSidechannelRequest {
 message SSHUploadPackWithSidechannelResponse {
   // Packfile negotiation statistics.
   PackfileNegotiationStatistics packfile_negotiation_statistics = 1;
+  // The number of response bytes
+  int64 bytes = 2;
 }
 
 // This comment is left unintentionally blank.