lib/r10k/git/ref.rb in r10k-1.3.5 vs lib/r10k/git/ref.rb in r10k-1.4.0

@@ -46,10 +46,10 @@
       @repository.rev_parse(ref)
     end
   end
 
   def ==(other)
-    other.sha1 == self.sha1
+    other.is_a?(R10K::Git::Ref) && other.sha1 == self.sha1
   rescue ArgumentError, R10K::Git::UnresolvableRefError
     false
   end
 
   def to_s