diff --git a/test/opts.js b/test/opts.js
index 12f1fbb..dc2451f 100644
--- a/test/opts.js
+++ b/test/opts.js
@@ -7,12 +7,13 @@ const mockFs = {
   readFileSync: () => '',
 }
 
-const gitOpts = t.mock('../lib/opts.js', {
-  'node:fs': mockFs,
-})
+let gitOpts
 
 t.beforeEach(() => {
   backupEnv()
+  gitOpts = t.mock('../lib/opts.js', {
+    'node:fs': mockFs,
+  })
 })
 
 t.afterEach(() => {