diff --git a/__test__/git-auth-helper.test.ts b/__test__/git-auth-helper.test.ts
index 609079ea2..92a462a2e 100644
--- a/__test__/git-auth-helper.test.ts
+++ b/__test__/git-auth-helper.test.ts
@@ -722,6 +722,7 @@ async function setup(testName: string): Promise<void> {
     log1: jest.fn(),
     remoteAdd: jest.fn(),
     removeEnvironmentVariable: jest.fn((name: string) => delete git.env[name]),
+    revParse: jest.fn(),
     setEnvironmentVariable: jest.fn((name: string, value: string) => {
       git.env[name] = value
     }),