diff --git a/script/fetch-fixtures b/script/fetch-fixtures
index fae41b4e..c8306185 100755
--- a/script/fetch-fixtures
+++ b/script/fetch-fixtures
@@ -15,9 +15,9 @@ fetch_grammar() {
   fi
 
   (
-    cd $grammar_dir;
+    cd $grammar_dir
     git fetch origin $ref --depth=1
-    git reset --hard origin/$ref;
+    git reset --hard FETCH_HEAD
   )
 }
 
diff --git a/script/fetch-fixtures.cmd b/script/fetch-fixtures.cmd
index 86c65e81..73e0a535 100644
--- a/script/fetch-fixtures.cmd
+++ b/script/fetch-fixtures.cmd
@@ -22,6 +22,6 @@ SET grammar_branch=%~2
 )
 pushd %grammar_dir%
 git fetch origin %2 --depth=1
-git reset --hard origin/%grammar_branch%
+git reset --hard FETCH_HEAD
 popd
 EXIT /B 0