diff --git a/gdm/shell.py b/gdm/shell.py
index 60f1bf8e..03fbf425 100644
--- a/gdm/shell.py
+++ b/gdm/shell.py
@@ -68,8 +68,9 @@ def git_fetch(self, repo):
 
     def git_revert(self):
         """Revert all changes in the working tree."""
-        self._clean()
+        self._stash()
         self._reset()
+        self._clean()
 
     def git_update(self, rev):
         """Update the working tree to the specified revision."""
@@ -86,6 +87,9 @@ def _fetch(self, repo):
         self._git('remote', 'add', 'origin', repo)
         self._git('fetch', '--all', '--tags', '--force', '--prune')
 
+    def _stash(self):
+        self._git('stash')
+
     def _clean(self):
         self._git('clean', '--force', '-d', '-x')
 
diff --git a/gdm/test/test_shell.py b/gdm/test/test_shell.py
index 416918ce..51dfd8e6 100644
--- a/gdm/test/test_shell.py
+++ b/gdm/test/test_shell.py
@@ -100,8 +100,9 @@ def test_revert(self, mock_call):
         """Verify the commands to revert all changes in a working tree."""
         self.shell.git_revert()
         self.assert_calls(mock_call, [
-            "git clean --force -d -x",
+            "git stash",
             "git reset --hard",
+            "git clean --force -d -x",
         ])
 
     def test_update(self, mock_call):