diff --git a/staging/src/k8s.io/kms/internal/plugins/_mock/.gitignore b/staging/src/k8s.io/kms/internal/plugins/_mock/.gitignore
new file mode 100644
index 00000000000..8ae0c29ad79
--- /dev/null
+++ b/staging/src/k8s.io/kms/internal/plugins/_mock/.gitignore
@@ -0,0 +1,2 @@
+# avoid constant churn as this file is not kept in sync with the root
+go.work.sum
diff --git a/staging/src/k8s.io/kms/internal/plugins/_mock/go.work.sum b/staging/src/k8s.io/kms/internal/plugins/_mock/go.work.sum
deleted file mode 100644
index db7cf5c0c53..00000000000
--- a/staging/src/k8s.io/kms/internal/plugins/_mock/go.work.sum
+++ /dev/null
@@ -1,61 +0,0 @@
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