diff --git a/perl/Git.pm b/perl/Git.pm
index d856930..62c472e 100644
--- a/perl/Git.pm
+++ b/perl/Git.pm
@@ -980,7 +980,7 @@
 		return -1;
 	}
 
-	if ($description !~ /^[0-9a-fA-F]{40} \S+ (\d+)$/) {
+	if ($description !~ /^[0-9a-fA-F]{40}(?:[0-9a-fA-F]{24})? \S+ (\d+)$/) {
 		carp "Unexpected result returned from git cat-file";
 		return -1;
 	}