diff --git a/src/karl/services/vcs.py b/src/karl/services/vcs.py
index 8f63c19..0d70139 100644
--- a/src/karl/services/vcs.py
+++ b/src/karl/services/vcs.py
@@ -30,6 +30,8 @@ class GitService:
     self._repo.git.checkout(sha)
 
   def get_head(self) -> Head:
+    if self._repo.head.is_detached:
+      return Head(self._repo.head.object.hexsha, "detached")
     return Head(
       self._repo.active_branch.commit.hexsha,
       self._repo.active_branch.name