diff --git a/lib/src/tree_builder.rs b/lib/src/tree_builder.rs
index 66c1582a6..1dfe7ddcf 100644
--- a/lib/src/tree_builder.rs
+++ b/lib/src/tree_builder.rs
@@ -50,10 +50,6 @@ impl TreeBuilder {
         self.store.as_ref()
     }
 
-    pub fn has_overrides(&self) -> bool {
-        !self.overrides.is_empty()
-    }
-
     pub fn set(&mut self, path: RepoPath, value: TreeValue) {
         assert!(!path.is_root());
         self.overrides.insert(path, Override::Replace(value));
diff --git a/lib/src/working_copy.rs b/lib/src/working_copy.rs
index f7461867d..15f36668b 100644
--- a/lib/src/working_copy.rs
+++ b/lib/src/working_copy.rs
@@ -717,8 +717,9 @@ impl TreeState {
             }
         });
         trace_span!("write tree").in_scope(|| {
-            is_dirty |= tree_builder.has_overrides();
-            self.tree_id = tree_builder.write_tree();
+            let new_tree_id = tree_builder.write_tree();
+            is_dirty |= new_tree_id != self.tree_id;
+            self.tree_id = new_tree_id;
         });
         if cfg!(debug_assertions) {
             let tree = self.current_tree().unwrap();