diff --git a/libimagstorestdhook/src/vcs/git/runtime.rs b/libimagstorestdhook/src/vcs/git/runtime.rs
index 5a48d5be..3daf8bf8 100644
--- a/libimagstorestdhook/src/vcs/git/runtime.rs
+++ b/libimagstorestdhook/src/vcs/git/runtime.rs
@@ -1,6 +1,6 @@
 use std::path::PathBuf;
 
-use git2::Repository;
+use git2::{Index, Repository};
 use toml::Value;
 
 use libimagerror::into::IntoError;
@@ -154,5 +154,25 @@ impl Runtime {
         .map_dbg_str("[GIT CREATE HOOK]: Branch checked out")
     }
 
+    /// Check whether the WD is "dirty" - whether there is a diff to the repository
+    /// This function returns false if there is no `Repository` object in the `Runtime`
+    pub fn repo_is_dirty(&self, index: &Index) -> bool {
+        match self.repository.as_ref() {
+            Some(repo) => {
+                repo.diff_index_to_workdir(Some(index), None)
+                    .map_dbg_str("Fetched diff: Index <-> WD")
+                    .map_dbg_err_str("Failed to fetch diff: Index <-> WD")
+                    .map(|diff| diff.deltas().count() != 0)
+                    .unwrap_or(false)
+            },
+
+            None => {
+                debug!("No repository: Cannot fetch diff: Index <-> WD");
+                false
+            }
+        }
+
+    }
+
 }
 
diff --git a/libimagstorestdhook/src/vcs/git/update.rs b/libimagstorestdhook/src/vcs/git/update.rs
index 70b37b49..d13dd987 100644
--- a/libimagstorestdhook/src/vcs/git/update.rs
+++ b/libimagstorestdhook/src/vcs/git/update.rs
@@ -106,6 +106,13 @@ impl StoreIdAccessor for UpdateHook {
         let repo      = try!(self.runtime.repository(&action));
         let mut index = try!(fetch_index(repo, &action));
 
+        if !self.runtime.repo_is_dirty(&index) {
+            debug!("[GIT UPDATE HOOK]: Repository seems to be clean. I'm done.");
+            return Ok(())
+        } else {
+            debug!("[GIT UPDATE HOOK]: Repository seems to be dirty. Continuing.");
+        }
+
         let signature = try!(
             repo.signature()
                 .map_err_into(GHEK::MkSignature)