diff --git a/dev-infra/utils/git.ts b/dev-infra/utils/git.ts
index 147f6a625a..1330ac158c 100644
--- a/dev-infra/utils/git.ts
+++ b/dev-infra/utils/git.ts
@@ -60,7 +60,7 @@ export class GitClient {
   /** The file path of project's root directory. */
   private _projectRoot = getRepoBaseDir();
   /** The OAuth scopes available for the provided Github token. */
-  private _oauthScopes = Promise.resolve<string[]>([]);
+  private _oauthScopes: Promise<string[]>|null = null;
   /** Regular expression that matches the provided Github token. */
   private _tokenRegex = new RegExp(this._githubToken, 'g');