diff --git a/changelogs/unreleased/10579-Lyndon-Li b/changelogs/unreleased/10579-Lyndon-Li
new file mode 100644
index 000000000..10edc6bdc
--- /dev/null
+++ b/changelogs/unreleased/10579-Lyndon-Li
@@ -0,0 +1 @@
+Fix issue #10576, change hashing algorithm to HMAC-SHA256-128 for kopia repo
\ No newline at end of file
diff --git a/pkg/repository/udmrepo/kopialib/backend/common.go b/pkg/repository/udmrepo/kopialib/backend/common.go
index 7af061204..2af3512bf 100644
--- a/pkg/repository/udmrepo/kopialib/backend/common.go
+++ b/pkg/repository/udmrepo/kopialib/backend/common.go
@@ -26,15 +26,15 @@ import (
 	"github.com/kopia/kopia/repo/content"
 	"github.com/kopia/kopia/repo/encryption"
 	"github.com/kopia/kopia/repo/format"
-	"github.com/kopia/kopia/repo/hashing"
 	"github.com/kopia/kopia/repo/splitter"
 
 	"github.com/vmware-tanzu/velero/pkg/repository/udmrepo"
 )
 
 const (
-	DefaultCacheLimitMB    = 5000
-	maxCacheDurationSecond = 30
+	DefaultCacheLimitMB     = 5000
+	maxCacheDurationSecond  = 30
+	defaultHashingAlgorithm = "HMAC-SHA256-128"
 )
 
 func setupLimits(ctx context.Context, flags map[string]string) throttling.Limits {
@@ -51,7 +51,7 @@ func setupLimits(ctx context.Context, flags map[string]string) throttling.Limits
 func SetupNewRepositoryOptions(ctx context.Context, flags map[string]string) repo.NewRepositoryOptions {
 	return repo.NewRepositoryOptions{
 		BlockFormat: format.ContentFormat{
-			Hash:       optionalHaveStringWithDefault(udmrepo.StoreOptionGenHashAlgo, flags, hashing.DefaultAlgorithm),
+			Hash:       optionalHaveStringWithDefault(udmrepo.StoreOptionGenHashAlgo, flags, defaultHashingAlgorithm),
 			Encryption: optionalHaveStringWithDefault(udmrepo.StoreOptionGenEncryptAlgo, flags, encryption.DefaultAlgorithm),
 		},
 
diff --git a/pkg/repository/udmrepo/kopialib/backend/common_test.go b/pkg/repository/udmrepo/kopialib/backend/common_test.go
index 1083bca9a..0e21959ae 100644
--- a/pkg/repository/udmrepo/kopialib/backend/common_test.go
+++ b/pkg/repository/udmrepo/kopialib/backend/common_test.go
@@ -24,7 +24,6 @@ import (
 	"github.com/kopia/kopia/repo/content"
 	"github.com/kopia/kopia/repo/encryption"
 	"github.com/kopia/kopia/repo/format"
-	"github.com/kopia/kopia/repo/hashing"
 	"github.com/kopia/kopia/repo/splitter"
 	"github.com/stretchr/testify/assert"
 
@@ -59,7 +58,7 @@ func TestSetupNewRepositoryOptions(t *testing.T) {
 			},
 			expected: repo.NewRepositoryOptions{
 				BlockFormat: format.ContentFormat{
-					Hash:       hashing.DefaultAlgorithm,
+					Hash:       defaultHashingAlgorithm,
 					Encryption: "fake-encrypt",
 				},
 				ObjectFormat: format.ObjectFormat{
@@ -74,7 +73,7 @@ func TestSetupNewRepositoryOptions(t *testing.T) {
 			},
 			expected: repo.NewRepositoryOptions{
 				BlockFormat: format.ContentFormat{
-					Hash:       hashing.DefaultAlgorithm,
+					Hash:       defaultHashingAlgorithm,
 					Encryption: encryption.DefaultAlgorithm,
 				},
 				ObjectFormat: format.ObjectFormat{
@@ -89,7 +88,7 @@ func TestSetupNewRepositoryOptions(t *testing.T) {
 			},
 			expected: repo.NewRepositoryOptions{
 				BlockFormat: format.ContentFormat{
-					Hash:       hashing.DefaultAlgorithm,
+					Hash:       defaultHashingAlgorithm,
 					Encryption: encryption.DefaultAlgorithm,
 				},
 				ObjectFormat: format.ObjectFormat{