diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0fb62b1063..da555a6187 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## Unreleased
+
+#### 🐞 Fixes
+
+- Fixed a Git "fatal: bad object" error when submodules are in being used.
+
 ## 1.30.0
 
 #### 💥 Breaking
@@ -47,7 +53,8 @@
 
 - Fixed `moon project-graph <id>` not including all dependencies/dependents. It was only showing
   direct relationships.
-- Fixed an issue where touched file paths would include Git submodule directories and trigger hasher warnings.
+- Fixed an issue where touched file paths would include Git submodule directories and trigger hasher
+  warnings.
 
 #### ⚙️ Internal
 
diff --git a/crates/app/src/commands/ci.rs b/crates/app/src/commands/ci.rs
index 8a9ec4594c..af564570db 100644
--- a/crates/app/src/commands/ci.rs
+++ b/crates/app/src/commands/ci.rs
@@ -214,7 +214,7 @@ async fn generate_action_graph(
 
     let mut action_graph_builder = session.build_action_graph(workspace_graph).await?;
     action_graph_builder.set_touched_files(touched_files)?;
-    action_graph_builder.set_affected_scopes(UpstreamScope::Direct, DownstreamScope::Deep)?;
+    action_graph_builder.set_affected_scopes(UpstreamScope::Direct, DownstreamScope::Direct)?;
 
     // Run dependents to ensure consumers still work correctly
     action_graph_builder.run_from_requirements(RunRequirements {
diff --git a/crates/vcs/src/git.rs b/crates/vcs/src/git.rs
index 00ef9ed8e3..5a00dc952a 100644
--- a/crates/vcs/src/git.rs
+++ b/crates/vcs/src/git.rs
@@ -783,11 +783,15 @@ impl Vcs for Git {
     ) -> miette::Result<TouchedFiles> {
         let mut touched_files = TouchedFiles::default();
 
-        for result in futures::future::try_join_all(
-            self.modules
-                .values()
-                .map(|module| self.exec_diff(module, base_revision, revision)),
-        )
+        // TODO: Revisit submodules
+        // https://github.com/moonrepo/moon/issues/1734
+        for result in futures::future::try_join_all(self.modules.values().filter_map(|module| {
+            if module.is_root() {
+                Some(self.exec_diff(module, base_revision, revision))
+            } else {
+                None
+            }
+        }))
         .await?
         {
             touched_files.merge(result);