diff --git a/Cargo.lock b/Cargo.lock
index 321a57b..2da9807 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -137,8 +137,8 @@ version = "0.1.0"
 dependencies = [
  "anyhow",
  "colored",
- "git",
  "indicatif",
+ "thiserror",
 ]
 
 [[package]]
@@ -161,8 +161,8 @@ dependencies = [
  "anyhow",
  "clap",
  "colored",
- "command-with-spinner",
  "dirs",
+ "git",
  "indicatif",
  "thiserror",
 ]
@@ -209,6 +209,8 @@ dependencies = [
 name = "git"
 version = "0.1.0"
 dependencies = [
+ "anyhow",
+ "command-with-spinner",
  "thiserror",
 ]
 
@@ -333,7 +335,7 @@ dependencies = [
  "anyhow",
  "clap",
  "colored",
- "command-with-spinner",
+ "git",
  "indicatif",
 ]
 
diff --git a/command-with-spinner/Cargo.toml b/command-with-spinner/Cargo.toml
index 132ae34..4efa47a 100644
--- a/command-with-spinner/Cargo.toml
+++ b/command-with-spinner/Cargo.toml
@@ -1,6 +1,7 @@
 [package]
 name = "command-with-spinner"
 version = "0.1.0"
+
 edition.workspace = true
 authors.workspace = true
 license-file.workspace = true
@@ -9,5 +10,5 @@ repository.workspace = true
 [dependencies]
 anyhow = "1.0.98"
 colored = "3.0.0"
-git = { version = "0.1.0", path = "../git" }
 indicatif = "0.17.11"
+thiserror = "2.0"
diff --git a/command-with-spinner/src/error.rs b/command-with-spinner/src/error.rs
new file mode 100644
index 0000000..025dde4
--- /dev/null
+++ b/command-with-spinner/src/error.rs
@@ -0,0 +1,12 @@
+/// Git operations error type
+#[derive(Debug, thiserror::Error)]
+pub enum CommandError {
+    #[error("Command failed with exit code: {0}")]
+    Failed(i32),
+
+    #[error("Command failed without exit code")]
+    FailedNoCode,
+
+    #[error("Failed to execute command: {0}")]
+    ExecutionError(#[from] std::io::Error),
+}
diff --git a/command-with-spinner/src/lib.rs b/command-with-spinner/src/lib.rs
index 61948e4..66ada84 100644
--- a/command-with-spinner/src/lib.rs
+++ b/command-with-spinner/src/lib.rs
@@ -4,7 +4,8 @@ use anyhow::{Context, Result};
 use colored::*;
 use indicatif::{ProgressBar, ProgressStyle};
 
-use git::error::GitError;
+mod error;
+use error::CommandError;
 
 /// Runs a git command with a progress spinner
 pub fn run_command(command: &mut Command, message: &str) -> Result<()> {
@@ -34,8 +35,8 @@ pub fn run_command(command: &mut Command, message: &str) -> Result<()> {
 
         let code = status.code();
         match code {
-            Some(code) => Err(GitError::Failed(code).into()),
-            None => Err(GitError::FailedNoCode.into()),
+            Some(code) => Err(CommandError::Failed(code).into()),
+            None => Err(CommandError::FailedNoCode.into()),
         }
     }
 }
diff --git a/create-worktree/Cargo.toml b/create-worktree/Cargo.toml
index 40291d9..2baeaf0 100644
--- a/create-worktree/Cargo.toml
+++ b/create-worktree/Cargo.toml
@@ -9,10 +9,10 @@ license-file.workspace = true
 repository.workspace = true
 
 [dependencies]
-clap = { version = "4.5", features = ["derive"] }
 anyhow = "1.0"
+clap = { version = "4.5", features = ["derive"] }
 colored = "3.0"
-indicatif = "0.17"
 dirs = "6.0"
+git = { version = "0.1.0", path = "../git" }
+indicatif = "0.17"
 thiserror = { version = "2.0" }
-command-with-spinner = { version = "0.1.0", path = "../command-with-spinner" }
diff --git a/create-worktree/src/main.rs b/create-worktree/src/main.rs
index 0e33816..00b9b84 100644
--- a/create-worktree/src/main.rs
+++ b/create-worktree/src/main.rs
@@ -1,12 +1,11 @@
 use std::env;
 use std::path::Path;
-use std::process::Command;
 
 use anyhow::{Context, Result};
 use clap::{ArgAction, Parser};
 use colored::*;
 
-use command_with_spinner::run_command;
+use git::Git;
 
 /// Tool to create git worktrees with convenient branch management
 #[derive(Parser, Debug)]
@@ -40,86 +39,6 @@ struct Args {
     no_color: bool,
 }
 
-/// Git command wrapper
-struct Git;
-
-impl Git {
-    /// Check if a branch exists locally
-    fn branch_exists_locally(branch: &str) -> Result<bool> {
-        let output = Command::new("git")
-            .args([
-                "branch",
-                "--list",
-                branch
-            ])
-            .output()
-            .context("Failed to check branch existence")?;
-
-        Ok(!output.stdout.is_empty())
-    }
-
-    /// Check if a branch exists on the remote
-    fn branch_exists_on_remote(branch: &str) -> Result<bool> {
-        let output = Command::new("git")
-            .args([
-                "ls-remote",
-                "--heads",
-                "origin",
-                branch
-            ])
-            .output()
-            .context("Failed to check remote branch existence")?;
-
-        Ok(!output.stdout.is_empty())
-    }
-
-    /// Create a new worktree with an existing branch
-    fn create_worktree_existing_branch(worktree_path: &str, branch: &str) -> Result<()> {
-        let mut cmd = Command::new("git");
-        cmd.args([
-            "worktree",
-            "add",
-            worktree_path,
-            branch
-        ]);
-        run_command(&mut cmd, &format!("Generating new worktree from existing branch: {branch}"))
-    }
-
-    /// Create a new worktree with a new branch
-    fn create_worktree_new_branch(worktree_path: &str, branch: &str, base: &str) -> Result<()> {
-        let mut cmd = Command::new("git");
-        cmd.args([
-            "worktree",
-            "add",
-            "-b", branch,
-            worktree_path,
-            base
-        ]);
-        run_command(&mut cmd, &format!("Generating new worktree: {worktree_path}"))
-    }
-
-    /// Create and push a new remote branch
-    fn create_remote_branch(branch: &str) -> Result<()> {
-        let mut cmd = Command::new("git");
-        cmd.args([
-            "push",
-            "-u", "origin",
-            branch
-        ]);
-        run_command(&mut cmd, &format!("Creating remote branch {branch}..."))
-    }
-
-    /// Set the upstream branch
-    fn set_upstream_branch(branch: &str) -> Result<()> {
-        let mut cmd = Command::new("git");
-        cmd.args([
-            "branch",
-            "--set-upstream-to", &format!("origin/{branch}")
-        ]);
-        run_command(&mut cmd, &format!("Setting upstream branch to 'origin/{branch}'"))
-    }
-}
-
 /// Update or create the remote tracking branch
 fn update_remote(branch: &str, create_upstream: bool) -> Result<()> {
     // Do nothing if create_upstream is disabled
diff --git a/git/Cargo.toml b/git/Cargo.toml
index 694768e..0ef8928 100644
--- a/git/Cargo.toml
+++ b/git/Cargo.toml
@@ -8,4 +8,6 @@ license-file.workspace = true
 repository.workspace = true
 
 [dependencies]
+anyhow = "1.0.98"
+command-with-spinner = { version = "0.1.0", path = "../command-with-spinner" }
 thiserror = "2.0"
diff --git a/git/src/lib.rs b/git/src/lib.rs
index a91e735..61f0ad5 100644
--- a/git/src/lib.rs
+++ b/git/src/lib.rs
@@ -1 +1,170 @@
-pub mod error;
+use std::{path::Path, process::Command};
+
+use anyhow::{Context, Result};
+
+use command_with_spinner::run_command;
+use error::GitError;
+
+mod error;
+/// Git command wrapper
+pub struct Git;
+
+impl Git {
+    /// Clone a repository as a bare clone in a .bare directory
+    pub fn clone_bare_repo(repo_url: &str, target_dir: &str) -> Result<()> {
+        // Create the base directory first
+        std::fs::create_dir_all(target_dir).context("Failed to create target directory")?;
+
+        // Create the .bare subdirectory path
+        let bare_dir = Path::new(target_dir).join(".bare");
+        let bare_dir_str = bare_dir.to_string_lossy();
+
+        // Clone the repository as a bare clone into .bare directory
+        let mut cmd = Command::new("git");
+        cmd.args([
+            "clone",
+            "--bare",
+            repo_url,
+            &bare_dir_str
+        ]);
+
+        match run_command(&mut cmd, &format!("Cloning repository as bare clone into {bare_dir_str}")) {
+            Ok(_) => Ok(()),
+            Err(_) => Err(GitError::FailedNoCode.into())
+        }
+    }
+
+    /// Set up the .git file to point to the .bare directory
+    pub fn setup_git_pointer(target_dir: &str) -> Result<()> {
+        let git_file_path = Path::new(target_dir).join(".git");
+        std::fs::write(git_file_path, "gitdir: ./.bare")
+            .context("Failed to create .git file pointing to .bare directory")
+    }
+
+    /// Configure remote.origin.fetch to fetch all references
+    pub fn configure_remote_fetch(target_dir: &str) -> Result<()> {
+        let bare_dir = Path::new(target_dir).join(".bare");
+        let bare_dir_str = bare_dir.to_string_lossy();
+
+        let mut cmd = Command::new("git");
+        cmd.args([
+            "--git-dir", &bare_dir_str,
+            "config",
+            "remote.origin.fetch", "+refs/heads/*:refs/remotes/origin/*"
+        ]);
+
+        match run_command(&mut cmd, "Configuring remote.origin.fetch") {
+            Ok(_) => Ok(()),
+            Err(_) => Err(GitError::FailedNoCode.into())
+        }
+    }
+
+    /// Fetch all remotes
+    pub fn fetch_remotes(target_dir: &str) -> Result<()> {
+        let bare_dir = Path::new(target_dir).join(".bare");
+        let bare_dir_str = bare_dir.to_string_lossy();
+
+        let mut cmd = Command::new("git");
+        cmd.args([
+            "--git-dir", &bare_dir_str,
+            "fetch",
+            "--all"
+        ]);
+
+        match run_command(&mut cmd, "Fetching all remotes") {
+            Ok(_) => Ok(()),
+            Err(_) => Err(GitError::FailedNoCode.into())
+        }
+    }
+
+    /// Check if a branch exists locally
+    pub fn branch_exists_locally(branch: &str) -> Result<bool> {
+        let output = Command::new("git")
+            .args([
+                "branch",
+                "--list",
+                branch
+            ])
+            .output()
+            .context("Failed to check branch existence")?;
+
+        Ok(!output.stdout.is_empty())
+    }
+
+    /// Check if a branch exists on the remote
+    pub fn branch_exists_on_remote(branch: &str) -> Result<bool> {
+        let output = Command::new("git")
+            .args([
+                "ls-remote",
+                "--heads",
+                "origin",
+                branch
+            ])
+            .output()
+            .context("Failed to check remote branch existence")?;
+
+        Ok(!output.stdout.is_empty())
+    }
+
+    /// Create a new worktree with an existing branch
+    pub fn create_worktree_existing_branch(worktree_path: &str, branch: &str) -> Result<()> {
+        let mut cmd = Command::new("git");
+        cmd.args([
+            "worktree",
+            "add",
+            worktree_path,
+            branch
+        ]);
+
+        match run_command(&mut cmd, &format!("Generating new worktree from existing branch: {branch}")) {
+            Ok(_) => Ok(()),
+            Err(_) => Err(GitError::FailedNoCode.into())
+        }
+    }
+
+    /// Create a new worktree with a new branch
+    pub fn create_worktree_new_branch(worktree_path: &str, branch: &str, base: &str) -> Result<()> {
+        let mut cmd = Command::new("git");
+        cmd.args([
+            "worktree",
+            "add",
+            "-b", branch,
+            worktree_path,
+            base
+        ]);
+
+        match run_command(&mut cmd, &format!("Generating new worktree: {worktree_path}")) {
+            Ok(_) => Ok(()),
+            Err(_) => Err(GitError::FailedNoCode.into())
+        }
+    }
+
+    /// Create and push a new remote branch
+    pub fn create_remote_branch(branch: &str) -> Result<()> {
+        let mut cmd = Command::new("git");
+        cmd.args([
+            "push",
+            "-u", "origin",
+            branch
+        ]);
+
+        match run_command(&mut cmd, &format!("Creating remote branch {branch}...")) {
+            Ok(_) => Ok(()),
+            Err(_) => Err(GitError::FailedNoCode.into())
+        }
+    }
+
+    /// Set the upstream branch
+    pub fn set_upstream_branch(branch: &str) -> Result<()> {
+        let mut cmd = Command::new("git");
+        cmd.args([
+            "branch",
+            "--set-upstream-to", &format!("origin/{branch}")
+        ]);
+
+        match run_command(&mut cmd, &format!("Setting upstream branch to 'origin/{branch}'")) {
+            Ok(_) => Ok(()),
+            Err(_) => Err(GitError::FailedNoCode.into())
+        }
+    }
+}
diff --git a/setup-repo/Cargo.toml b/setup-repo/Cargo.toml
index bcc1220..cb0f995 100644
--- a/setup-repo/Cargo.toml
+++ b/setup-repo/Cargo.toml
@@ -12,5 +12,5 @@ repository.workspace = true
 anyhow = "1.0"
 clap = { version = "4.5", features = ["derive"] }
 colored = "3.0"
-command-with-spinner = { version = "0.1.0", path = "../command-with-spinner" }
+git = { version = "0.1.0", path = "../git" }
 indicatif = "0.17"
diff --git a/setup-repo/src/main.rs b/setup-repo/src/main.rs
index 47d8be9..02269a6 100644
--- a/setup-repo/src/main.rs
+++ b/setup-repo/src/main.rs
@@ -1,11 +1,8 @@
-use std::path::Path;
-use std::process::Command;
-
-use anyhow::{Context, Result};
+use anyhow::Result;
 use clap::Parser;
 use colored::*;
 
-use command_with_spinner::run_command;
+use git::Git;
 
 /// Tool to set up Git repositories for worktree development
 #[derive(Parser, Debug)]
@@ -28,66 +25,6 @@ struct Args {
     no_color: bool,
 }
 
-/// Git command wrapper
-struct Git;
-
-impl Git {
-    /// Clone a repository as a bare clone in a .bare directory
-    fn clone_bare_repo(repo_url: &str, target_dir: &str) -> Result<()> {
-        // Create the base directory first
-        std::fs::create_dir_all(target_dir).context("Failed to create target directory")?;
-
-        // Create the .bare subdirectory path
-        let bare_dir = Path::new(target_dir).join(".bare");
-        let bare_dir_str = bare_dir.to_string_lossy();
-
-        // Clone the repository as a bare clone into .bare directory
-        let mut cmd = Command::new("git");
-        cmd.args([
-            "clone",
-            "--bare",
-            repo_url,
-            &bare_dir_str
-        ]);
-        run_command(&mut cmd, &format!("Cloning repository as bare clone into {bare_dir_str}"))
-    }
-
-    /// Set up the .git file to point to the .bare directory
-    fn setup_git_pointer(target_dir: &str) -> Result<()> {
-        let git_file_path = Path::new(target_dir).join(".git");
-        std::fs::write(git_file_path, "gitdir: ./.bare")
-            .context("Failed to create .git file pointing to .bare directory")
-    }
-
-    /// Configure remote.origin.fetch to fetch all references
-    fn configure_remote_fetch(target_dir: &str) -> Result<()> {
-        let bare_dir = Path::new(target_dir).join(".bare");
-        let bare_dir_str = bare_dir.to_string_lossy();
-
-        let mut cmd = Command::new("git");
-        cmd.args([
-            "--git-dir", &bare_dir_str,
-            "config",
-            "remote.origin.fetch", "+refs/heads/*:refs/remotes/origin/*"
-        ]);
-        run_command(&mut cmd, "Configuring remote.origin.fetch")
-    }
-
-    /// Fetch all remotes
-    fn fetch_remotes(target_dir: &str) -> Result<()> {
-        let bare_dir = Path::new(target_dir).join(".bare");
-        let bare_dir_str = bare_dir.to_string_lossy();
-
-        let mut cmd = Command::new("git");
-        cmd.args([
-            "--git-dir", &bare_dir_str,
-            "fetch",
-            "--all"
-        ]);
-        run_command(&mut cmd, "Fetching all remotes")
-    }
-}
-
 fn main() -> Result<()> {
     // Parse arguments
     let args = Args::parse();