diff --git a/src/refractr.rs b/src/refractr.rs
index 3c1ef19..7799c15 100644
--- a/src/refractr.rs
+++ b/src/refractr.rs
@@ -1,3 +1,4 @@
+use git2::build::CheckoutBuilder;
 use git2::{BranchType, Cred, PushOptions, RemoteCallbacks, Repository};
 use sha2::{Sha256, Digest};
 
@@ -69,19 +70,21 @@ fn fast_forward(refractr: &Refractr, repo_dir: &str, branches: &Option<Vec<Strin
   common::verbose(refractr.verbose, 2, format!("Pulling origin"));
   repo.find_remote("origin")?.fetch(&branch_list, None, None)?;
 
-  for branch in branch_list {
-    let local_branch = repo.find_branch(&branch, BranchType::Local).unwrap();
-    let local_commit = local_branch.get().peel_to_commit().unwrap();
-
-    let origin_branch = repo.find_branch(&format!("origin/{}", branch), BranchType::Remote).unwrap();
-    let origin_commit = origin_branch.get().peel_to_commit().unwrap();
-
-    if local_commit.id() < origin_commit.id() {
-      repo.set_head(format!("origin/{}", branch).as_str())?;
+  let fetch_head = repo.find_reference("FETCH_HEAD")?;
+  let fetch_commit = repo.reference_to_annotated_commit(&fetch_head)?;
+  let analysis = repo.merge_analysis(&[&fetch_commit])?;
+  if analysis.0.is_fast_forward() {
+    for branch in branch_list {
+      let refname = format!("refs/heads/{}", branch);
+      let mut reference = repo.find_reference(&refname)?;
+      reference.set_target(fetch_commit.id(), "Fast-forward")?;
+      repo.set_head(&refname)?;
+      let _ = repo.checkout_head(Some(CheckoutBuilder::default().force()));
     }
-
   }
+
   Ok(())
+
 }
 
 fn make_remotes<'a> (refractr: &Refractr, repo: &'a Repository, cfg: &ConfigFile) -> Vec<String> {