diff --git a/pkg/vendir/cmd/sync.go b/pkg/vendir/cmd/sync.go
index 9673d49d..9262c5f8 100644
--- a/pkg/vendir/cmd/sync.go
+++ b/pkg/vendir/cmd/sync.go
@@ -88,7 +88,6 @@ func (o *SyncOptions) Run() error {
 	}
 
 	if len(dirs) > 0 {
-
 		conf, err = conf.Subset(dirOverrides(dirs).Paths())
 		if err != nil {
 			return err
diff --git a/pkg/vendir/config/lock_config.go b/pkg/vendir/config/lock_config.go
index 29b945d0..c6a688b8 100644
--- a/pkg/vendir/config/lock_config.go
+++ b/pkg/vendir/config/lock_config.go
@@ -53,16 +53,6 @@ func NewLockConfigFromBytes(bs []byte) (LockConfig, error) {
 	return config, nil
 }
 
-func LockFileExists(path string) bool {
-	if _, err := os.Stat(path); err != nil {
-		if errors.Is(err, fs.ErrNotExist) {
-			return false
-		}
-		panic(fmt.Errorf("can not stat file '%v': %v", path, err))
-	}
-	return true
-}
-
 func (c LockConfig) WriteToFile(path string) error {
 	existingBytes, err := os.ReadFile(path)
 	if err != nil && !errors.Is(err, fs.ErrNotExist) {
@@ -138,7 +128,7 @@ func (c *LockConfig) Merge(other LockConfig) error {
 			}
 		}
 		if !replaced {
-			c.AppendDirectory(dir)
+			c.Directories = append(c.Directories, dir)
 		}
 	}
 	return nil
@@ -160,7 +150,7 @@ func (c *LockConfig) ReplaceContents(path string, replaceCon LockDirectoryConten
 	return false
 }
 
-func (c LockConfig) AppendContents(path string, appendCon LockDirectoryContents) bool {
+func (c *LockConfig) AppendContents(path string, appendCon LockDirectoryContents) bool {
 	for i, dir := range c.Directories {
 		if dir.Path == path {
 			c.Directories[i].Contents = append(dir.Contents, appendCon)
@@ -169,6 +159,3 @@ func (c LockConfig) AppendContents(path string, appendCon LockDirectoryContents)
 	}
 	return false
 }
-func (c *LockConfig) AppendDirectory(dir LockDirectory) {
-	c.Directories = append(c.Directories, dir)
-}
diff --git a/pkg/vendir/config/lock_config_test.go b/pkg/vendir/config/lock_config_test.go
index 68444355..0f0d5650 100644
--- a/pkg/vendir/config/lock_config_test.go
+++ b/pkg/vendir/config/lock_config_test.go
@@ -216,26 +216,41 @@ func TestLockConfig_AppendContents(t *testing.T) {
 	})
 }
 
-func TestLockConfig_AppendDirectory(t *testing.T) {
+func TestLockConfig_Merge(t *testing.T) {
 	lockConfig := config.LockConfig{
-		APIVersion:  "vendir.k14s.io/v1alpha1",
-		Kind:        "LockConfig",
-		Directories: []config.LockDirectory{},
-	}
-	lockDirectory := config.LockDirectory{
-		Contents: []config.LockDirectoryContents{
+		APIVersion: "vendir.k14s.io/v1alpha1",
+		Kind:       "LockConfig",
+		Directories: []config.LockDirectory{
 			{
-				Path: "gitpath",
+				Path: "gitpath-1",
+				Contents: []config.LockDirectoryContents{
+					{
+						Path: "gitpath-1",
+					},
+				},
 			},
+		},
+	}
+	lockConfig2 := config.LockConfig{
+		APIVersion: "vendir.k14s.io/v1alpha1",
+		Kind:       "LockConfig",
+		Directories: []config.LockDirectory{
 			{
-				Path: "dirpath",
+				Path: "gitpath-2",
+				Contents: []config.LockDirectoryContents{
+					{
+						Path: "gitpath-2",
+					},
+				},
 			},
 		},
 	}
 	t.Run("append directory to config", func(t *testing.T) {
-		lockConfig.AppendDirectory(lockDirectory)
-		require.Equal(t, 1, len(lockConfig.Directories))
-		require.Equal(t, 2, len(lockConfig.Directories[0].Contents))
-		require.Equal(t, config.LockDirectoryContents{Path: "gitpath"}, lockConfig.Directories[0].Contents[0])
+		lockConfig.Merge(lockConfig2)
+		require.Equal(t, 2, len(lockConfig.Directories))
+		require.Equal(t, 1, len(lockConfig.Directories[0].Contents))
+		require.Equal(t, 1, len(lockConfig.Directories[1].Contents))
+		require.Equal(t, config.LockDirectoryContents{Path: "gitpath-1"}, lockConfig.Directories[0].Contents[0])
+		require.Equal(t, config.LockDirectoryContents{Path: "gitpath-2"}, lockConfig.Directories[1].Contents[0])
 	})
 }