https://git.ruby-lang.org/ruby.git/commit/?id=aacd918340

From aacd918340e20e4556a6369c3f5933226b0bb093 Mon Sep 17 00:00:00 2001
From: Hiroshi SHIBATA <hsbt@r...>
Date: Sun, 26 Jan 2020 07:40:56 +0900
Subject: Do not use `git pull` because origin/master was already fetched.


diff --git a/tool/sync_default_gems.rb b/tool/sync_default_gems.rb
index c065b9c..07deee6 100644
--- a/tool/sync_default_gems.rb
+++ b/tool/sync_default_gems.rb
@@ -391,12 +391,11 @@ def update_default_gems(gem) https://github.com/ruby/ruby/blob/trunk/tool/sync_default_gems.rb#L391
       `git co ruby-core/master`
       `git branch ruby-core`
     end
-    `git co ruby-core`
     `git fetch ruby-core master --no-tags`
+    `git co ruby-core`
     `git rebase ruby-core/master`
     `git co master`
-    `git stash`
-    `git pull --rebase`
+    `git rebase origin/master`
   end
 end
 
-- 
cgit v0.10.2


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