diff --git a/codex-rs/Cargo.lock b/codex-rs/Cargo.lock
index a55b2aec2a..e01ab1430f 100644
--- a/codex-rs/Cargo.lock
+++ b/codex-rs/Cargo.lock
@@ -1390,7 +1390,6 @@ dependencies = [
  "codex-common",
  "codex-core",
  "codex-file-search",
- "codex-git-tooling",
  "codex-login",
  "codex-ollama",
  "codex-protocol",
@@ -3088,7 +3087,7 @@ version = "0.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f37dccff2791ab604f9babef0ba14fbe0be30bd368dc541e2b08d07c8aa908f3"
 dependencies = [
- "bitflags 2.9.1",
+ "bitflags 2.9.4",
  "inotify-sys",
  "libc",
 ]
@@ -3727,7 +3726,7 @@ version = "8.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4d3d07927151ff8575b7087f245456e549fea62edf0ec4e565a5ee50c8402bc3"
 dependencies = [
- "bitflags 2.9.1",
+ "bitflags 2.9.4",
  "fsevent-sys",
  "inotify",
  "kqueue",
diff --git a/codex-rs/git-tooling/src/ghost_commits.rs b/codex-rs/git-tooling/src/ghost_commits.rs
index ec31c377d3..48bbd0f044 100644
--- a/codex-rs/git-tooling/src/ghost_commits.rs
+++ b/codex-rs/git-tooling/src/ghost_commits.rs
@@ -177,6 +177,8 @@ pub fn restore_to_commit(repo_path: &Path, commit_id: &str) -> Result<(), GitToo
     restore_to_commit_inner(repo_root.as_path(), repo_prefix.as_deref(), commit_id)
 }
 
+/// Restores the working tree and index to the given commit using `git restore`.
+/// The repository root and optional repository-relative prefix limit the restore scope.
 fn restore_to_commit_inner(
     repo_root: &Path,
     repo_prefix: Option<&Path>,
@@ -206,6 +208,7 @@ struct UntrackedSnapshot {
     dirs: Vec<PathBuf>,
 }
 
+/// Captures the repository's untracked files and directories scoped to an optional subdirectory.
 fn capture_existing_untracked(
     repo_root: &Path,
     repo_prefix: Option<&Path>,
@@ -258,6 +261,7 @@ fn capture_existing_untracked(
     Ok(snapshot)
 }
 
+/// Removes untracked files and directories that were not present when the snapshot was captured.
 fn remove_new_untracked(
     repo_root: &Path,
     preserved_files: &[PathBuf],
@@ -288,6 +292,7 @@ fn remove_new_untracked(
     Ok(())
 }
 
+/// Determines whether an untracked path should be kept because it existed in the snapshot.
 fn should_preserve(
     path: &Path,
     preserved_files: &HashSet<PathBuf>,
@@ -302,6 +307,7 @@ fn should_preserve(
         .any(|dir| path.starts_with(dir.as_path()))
 }
 
+/// Deletes the file or directory at the provided path, ignoring if it is already absent.
 fn remove_path(path: &Path) -> Result<(), GitToolingError> {
     match fs::symlink_metadata(path) {
         Ok(metadata) => {
diff --git a/codex-rs/git-tooling/src/lib.rs b/codex-rs/git-tooling/src/lib.rs
index ec89895671..650953ed08 100644
--- a/codex-rs/git-tooling/src/lib.rs
+++ b/codex-rs/git-tooling/src/lib.rs
@@ -13,11 +13,13 @@ pub use ghost_commits::restore_ghost_commit;
 pub use ghost_commits::restore_to_commit;
 pub use platform::create_symlink;
 
+type CommitID = String;
+
 /// Details of a ghost commit created from a repository state.
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub struct GhostCommit {
-    id: String,
-    parent: Option<String>,
+    id: CommitID,
+    parent: Option<CommitID>,
     preexisting_untracked_files: Vec<PathBuf>,
     preexisting_untracked_dirs: Vec<PathBuf>,
 }
@@ -25,8 +27,8 @@ pub struct GhostCommit {
 impl GhostCommit {
     /// Create a new ghost commit wrapper from a raw commit ID and optional parent.
     pub fn new(
-        id: String,
-        parent: Option<String>,
+        id: CommitID,
+        parent: Option<CommitID>,
         preexisting_untracked_files: Vec<PathBuf>,
         preexisting_untracked_dirs: Vec<PathBuf>,
     ) -> Self {