diff --git a/git-checkout.sh b/git-checkout.sh
index 4e7c57a5f3..4a605cd9c6 100755
--- a/git-checkout.sh
+++ b/git-checkout.sh
@@ -55,6 +55,7 @@ then
     git-read-tree --reset $new &&
 	git-checkout-index -q -f -u -a
 else
+    git-update-index --refresh >/dev/null
     git-read-tree -m -u $old $new
 fi