From 5fbb55ffa41a6549cef99567e902b5d379314049 Mon Sep 17 00:00:00 2001
From: Tim Branyen <tim@tabdeveloper.com>
Date: Thu, 9 Apr 2015 10:58:51 -0400
Subject: [PATCH 1/2] Attempt remove the delete keyword

---
 lib/clone.js | 1 -
 1 file changed, 1 deletion(-)

diff --git a/lib/clone.js b/lib/clone.js
index b1388b589..6fb2dbade 100644
--- a/lib/clone.js
+++ b/lib/clone.js
@@ -18,7 +18,6 @@ Clone.clone = function(url, local_path, options) {
 
   if (options) {
     remoteCallbacks = options.remoteCallbacks;
-    delete options.remoteCallbacks;
   }
 
   options = normalizeOptions(options, NodeGit.CloneOptions);

From c31ea4e3e5f2209e464f6d38d33752811801dee2 Mon Sep 17 00:00:00 2001
From: Tim <tim@tabdeveloper.com>
Date: Mon, 20 Apr 2015 16:31:16 -0400
Subject: [PATCH 2/2] Shallow clone before mutating the options object

---
 lib/clone.js               |  3 +++
 lib/utils/shallow_clone.js | 10 ++++++++++
 2 files changed, 13 insertions(+)
 create mode 100644 lib/utils/shallow_clone.js

diff --git a/lib/clone.js b/lib/clone.js
index 6fb2dbade..8efdae739 100644
--- a/lib/clone.js
+++ b/lib/clone.js
@@ -1,4 +1,5 @@
 var NodeGit = require("../");
+var shallowClone = require("./utils/shallow_clone");
 var normalizeOptions = NodeGit.Utils.normalizeOptions;
 
 var Clone = NodeGit.Clone;
@@ -17,7 +18,9 @@ Clone.clone = function(url, local_path, options) {
   var remoteCallbacks;
 
   if (options) {
+    options = shallowClone(options);
     remoteCallbacks = options.remoteCallbacks;
+    delete options.remoteCallbacks;
   }
 
   options = normalizeOptions(options, NodeGit.CloneOptions);
diff --git a/lib/utils/shallow_clone.js b/lib/utils/shallow_clone.js
new file mode 100644
index 000000000..f93e67523
--- /dev/null
+++ b/lib/utils/shallow_clone.js
@@ -0,0 +1,10 @@
+module.exports = function(obj) {
+  var merges = Array.prototype.slice.call(arguments, 1);
+
+  return merges.reduce(function(obj, merge) {
+    return Object.keys(merge).reduce(function(obj, key) {
+      obj[key] = merge[key];
+      return obj;
+    }, obj);
+  }, obj || {});
+};