From 3b1a54dffddc3a72f3a67935ff80e57292f38298 Mon Sep 17 00:00:00 2001
From: leo <longshuang@msn.cn>
Date: Mon, 21 Oct 2024 16:20:34 +0800
Subject: [PATCH] refactor: use `git update-ref $LOCAL_BRANCH $REMOTE_BRANCH`
 instead of `git fetch $REMOTE $LOCAL_BRANCH $REMOTE_BRANCH` to fast-forward
 local branch without checkout it first.

---
 src/Commands/Fetch.cs                        | 10 ---------
 src/Commands/UpdateRef.cs                    | 23 ++++++++++++++++++++
 src/ViewModels/FastForwardWithoutCheckout.cs |  2 +-
 3 files changed, 24 insertions(+), 11 deletions(-)
 create mode 100644 src/Commands/UpdateRef.cs

diff --git a/src/Commands/Fetch.cs b/src/Commands/Fetch.cs
index 94b7fde9..17f08609 100644
--- a/src/Commands/Fetch.cs
+++ b/src/Commands/Fetch.cs
@@ -24,16 +24,6 @@ namespace SourceGit.Commands
             Args += remote;
         }
 
-        public Fetch(string repo, string remote, string localBranch, string remoteBranch, Action<string> outputHandler)
-        {
-            _outputHandler = outputHandler;
-            WorkingDirectory = repo;
-            Context = repo;
-            TraitErrorAsOutput = true;
-            SSHKey = new Config(repo).Get($"remote.{remote}.sshkey");
-            Args = $"fetch --progress --verbose {remote} {remoteBranch}:{localBranch}";
-        }
-
         protected override void OnReadline(string line)
         {
             _outputHandler?.Invoke(line);
diff --git a/src/Commands/UpdateRef.cs b/src/Commands/UpdateRef.cs
new file mode 100644
index 00000000..ba1b3d2f
--- /dev/null
+++ b/src/Commands/UpdateRef.cs
@@ -0,0 +1,23 @@
+using System;
+
+namespace SourceGit.Commands
+{
+    public class UpdateRef : Command
+    {
+        public UpdateRef(string repo, string refName, string toRevision, Action<string> outputHandler)
+        {
+            _outputHandler = outputHandler;
+
+            WorkingDirectory = repo;
+            Context = repo;
+            Args = $"update-ref {refName} {toRevision}";
+        }
+
+        protected override void OnReadline(string line)
+        {
+            _outputHandler?.Invoke(line);
+        }
+
+        private Action<string> _outputHandler;
+    }
+}
diff --git a/src/ViewModels/FastForwardWithoutCheckout.cs b/src/ViewModels/FastForwardWithoutCheckout.cs
index 3861046d..df4b4d73 100644
--- a/src/ViewModels/FastForwardWithoutCheckout.cs
+++ b/src/ViewModels/FastForwardWithoutCheckout.cs
@@ -31,7 +31,7 @@ namespace SourceGit.ViewModels
 
             return Task.Run(() =>
             {
-                new Commands.Fetch(_repo.FullPath, To.Remote, Local.Name, To.Name, SetProgressDescription).Exec();
+                new Commands.UpdateRef(_repo.FullPath, Local.FullName, To.FullName, SetProgressDescription).Exec();
                 CallUIThread(() => _repo.SetWatcherEnabled(true));
                 return true;
             });