From 116b9e6a16c72276e92578b761846d05eaa3eff6 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Mon, 24 Feb 2020 12:32:50 +0900
Subject: [PATCH] Retry checking out the version

rss 0.2.9 is tagged without the "v" prefix.
---
 tool/fetch-bundled_gems.rb | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/tool/fetch-bundled_gems.rb b/tool/fetch-bundled_gems.rb
index c2a1c0b700..5769a19b37 100755
--- a/tool/fetch-bundled_gems.rb
+++ b/tool/fetch-bundled_gems.rb
@@ -26,4 +26,8 @@ else
   puts "retrieving #{n} ..."
   system(*%W"git clone #{u} #{n}") or abort
 end
-system(*%W"git checkout #{v}", chdir: n) or abort
+unless system(*%W"git checkout #{v}", chdir: n)
+  unless v.sub!(/\Av/, '') and system(*%W"git checkout #{v}", chdir: n)
+    abort
+  end
+end