diff --git a/packages/vscode/src/credentials.ts b/packages/vscode/src/credentials.ts
index 2b85add5..158401c8 100644
--- a/packages/vscode/src/credentials.ts
+++ b/packages/vscode/src/credentials.ts
@@ -38,7 +38,7 @@ export class Credentials {
     this.octokit = undefined;
   }
 
-  registerListeners(context: vscode.ExtensionContext): void {
+  private registerListeners(context: vscode.ExtensionContext): void {
     context.subscriptions.push(
       vscode.authentication.onDidChangeSessions(async (e) => {
         if (e.provider.id === GITHUB_AUTH_PROVIDER_ID) {
@@ -48,25 +48,22 @@ export class Credentials {
     );
   }
 
-  async getOctokit(): Promise<Octokit.Octokit> {
+  /** Octokit 인스턴스가 없다면, 인증 세션을 새로 만듦으로써, Octokit 인스턴스가 항상 존재하도록 보장한다. */
+  private async getOctokitInstance(): Promise<Octokit.Octokit> {
     if (this.octokit) {
       return this.octokit;
+    } else {
+      const session = await vscode.authentication.getSession(GITHUB_AUTH_PROVIDER_ID, SCOPES, { createIfNone: true });
+      this.octokit = await this.createOctokit(session);
+      return this.octokit;
     }
+  }
 
-    const session = await vscode.authentication.getSession(GITHUB_AUTH_PROVIDER_ID, SCOPES, { createIfNone: true });
-    this.octokit = await this.createOctokit(session);
-
-    return this.octokit;
+  async getOctokit(): Promise<Octokit.Octokit> {
+    return this.getOctokitInstance();
   }
 
   async getAuth(): Promise<OctokitAuth> {
-    if (this.octokit) {
-      return this.octokit.auth() as Promise<OctokitAuth>;
-    }
-
-    const session = await vscode.authentication.getSession(GITHUB_AUTH_PROVIDER_ID, SCOPES, { createIfNone: true });
-    this.octokit = await this.createOctokit(session);
-
-    return this.octokit.auth() as Promise<OctokitAuth>;
+    return (await this.getOctokitInstance()).auth() as Promise<OctokitAuth>;
   }
 }
diff --git a/packages/vscode/src/extension.ts b/packages/vscode/src/extension.ts
index 2fc0c8e6..c5da7b41 100644
--- a/packages/vscode/src/extension.ts
+++ b/packages/vscode/src/extension.ts
@@ -4,7 +4,7 @@ import * as vscode from "vscode";
 import { COMMAND_LAUNCH, COMMAND_LOGIN_WITH_GITHUB, COMMAND_RESET_GITHUB_AUTH } from "./commands";
 import { Credentials } from "./credentials";
 import { GithubTokenUndefinedError, WorkspacePathUndefinedError } from "./errors/ExtensionError";
-import { deleteGithubToken, getGithubToken, setGithubToken,  } from "./setting-repository";
+import { deleteGithubToken, getGithubToken, setGithubToken } from "./setting-repository";
 import { mapClusterNodesFrom } from "./utils/csm.mapper";
 import {
   findGit,
@@ -18,7 +18,7 @@ import {
 import WebviewLoader from "./webview-loader";
 
 let myStatusBarItem: vscode.StatusBarItem;
-const projectName = 'githru';
+const projectName = "githru";
 
 function normalizeFsPath(fsPath: string) {
   return fsPath.replace(/\\/g, "/");
@@ -58,12 +58,11 @@ export async function activate(context: vscode.ExtensionContext) {
 
       const fetchBranches = async () => await getBranches(gitPath, currentWorkspacePath);
       const fetchCurrentBranch = async () => {
-
         let branchName;
         try {
-            branchName = await getCurrentBranchName(gitPath, currentWorkspacePath)
+          branchName = await getCurrentBranchName(gitPath, currentWorkspacePath);
         } catch (error) {
-            console.error(error);
+          console.error(error);
         }
 
         if (!branchName) {