From 79813b2f7772cb6bf6a7b066fd1743a337ddd3eb Mon Sep 17 00:00:00 2001
From: Jordi Boggiano <j.boggiano@seld.be>
Date: Thu, 30 Jul 2020 14:24:04 +0200
Subject: [PATCH] Fix detection of git refs to be more strict

---
 src/Composer/Repository/Vcs/VcsDriver.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Composer/Repository/Vcs/VcsDriver.php b/src/Composer/Repository/Vcs/VcsDriver.php
index 37946da23..f174f8527 100644
--- a/src/Composer/Repository/Vcs/VcsDriver.php
+++ b/src/Composer/Repository/Vcs/VcsDriver.php
@@ -81,7 +81,7 @@ abstract class VcsDriver implements VcsDriverInterface
      */
     protected function shouldCache($identifier)
     {
-        return $this->cache && preg_match('{[a-f0-9]{40}}i', $identifier);
+        return $this->cache && preg_match('{^[a-f0-9]{40}$}iD', $identifier);
     }
 
     /**