diff --git a/app/config/settings.py b/app/config/settings.py
index 33a7019..c831957 100644
--- a/app/config/settings.py
+++ b/app/config/settings.py
@@ -12,6 +12,12 @@ class AppConfig(BaseModel):
   reload: bool = True
 
 
+class GitConfig(BaseModel):
+  directory: str = "/opt/repo/sample"
+  branch: str = "master"
+  remote: str = "origin"
+
+
 class KeePassConfig(BaseModel):
   file: str = "database.kdbx"
   secret: Path | str = "/run/secrets/kp_secret"
@@ -20,6 +26,7 @@ class KeePassConfig(BaseModel):
 class Settings(BaseSettings):
   model_config = SettingsConfigDict(env_prefix="KARL_", env_nested_delimiter="__")
   app: AppConfig = AppConfig()
+  git: GitConfig = GitConfig()
   kp: KeePassConfig = KeePassConfig()
 
   @classmethod
diff --git a/app/services/vcs.py b/app/services/vcs.py
index e69de29..c137108 100644
--- a/app/services/vcs.py
+++ b/app/services/vcs.py
@@ -0,0 +1,28 @@
+from git import Repo, Remote
+
+from app.config import get_settings
+
+
+class GitService:
+  def __init__(self):
+    self._settings = get_settings()
+    self._repo = Repo(self._settings.git.directory)
+    self._origin: Remote = self._repo.remotes.origin
+
+  def get_modified_compose(self) -> str | None:
+    self._update()
+    return self._diff()
+
+  def _update(self):
+    self._origin.pull()
+
+  def _diff(self) -> str | None:
+    diff = self._repo.head.commit.diff("HEAD~1")
+    composes = [f for f in diff if f.a_path.endswith("docker-compose.yml")]
+    match len(composes):
+      case 0:
+        return None
+      case 1:
+        return composes[0].a_path
+      case _:
+        raise Exception("Multiple compose files modified")
diff --git a/pyproject.toml b/pyproject.toml
index 0f8ebcf..89ead06 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -11,6 +11,7 @@ dependencies = [
     "jinja2>=3.1.4",
     "pydantic-settings>=2.4.0",
     "pyyaml>=6.0.2",
+    "gitpython>=3.1.45",
     "pykeepass>=4.1.1.post1"
 ]