diff --git a/tools/helm_tk.sh b/tools/helm_tk.sh
index ab4c5c90..bb1dadb6 100755
--- a/tools/helm_tk.sh
+++ b/tools/helm_tk.sh
@@ -24,7 +24,7 @@ TMP_DIR=$(mktemp -d)
 {
     HTK_REPO_DIR=$TMP_DIR/htk
     git clone "$HTK_REPO" "$HTK_REPO_DIR"
-    (cd "$HTK_REPO_DIR" && git reset --hard "${HTK_STABLE_COMMIT}")
+    (cd "$HTK_REPO_DIR" && git fetch --depth=1 "$HTK_REPO" "$HTK_STABLE_COMMIT" && git checkout FETCH_HEAD)
     cp -r "${HTK_REPO_DIR}/helm-toolkit" charts/deps/
 }