diff --git a/package-lock.json b/package-lock.json
index f9204cf..9917d98 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9087,14 +9087,6 @@
         }
       }
     },
-    "mkdirp": {
-      "version": "0.5.5",
-      "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.5.tgz",
-      "integrity": "sha512-NKmAlESf6jMGym1++R0Ra7wvhV+wFW63FaSOFPwRahvea0gMUcGUhVeAg/0BC0wiv9ih5NYPB1Wn1UEI1/L+xQ==",
-      "requires": {
-        "minimist": "^1.2.5"
-      }
-    },
     "moment": {
       "version": "2.29.1",
       "resolved": "https://registry.npmjs.org/moment/-/moment-2.29.1.tgz",
@@ -9126,6 +9118,16 @@
         "on-finished": "^2.3.0",
         "type-is": "^1.6.4",
         "xtend": "^4.0.0"
+      },
+      "dependencies": {
+        "mkdirp": {
+          "version": "0.5.5",
+          "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.5.tgz",
+          "integrity": "sha512-NKmAlESf6jMGym1++R0Ra7wvhV+wFW63FaSOFPwRahvea0gMUcGUhVeAg/0BC0wiv9ih5NYPB1Wn1UEI1/L+xQ==",
+          "requires": {
+            "minimist": "^1.2.5"
+          }
+        }
       }
     },
     "multimatch": {
@@ -9489,6 +9491,14 @@
             "minipass": "^2.9.0"
           }
         },
+        "mkdirp": {
+          "version": "0.5.5",
+          "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.5.tgz",
+          "integrity": "sha512-NKmAlESf6jMGym1++R0Ra7wvhV+wFW63FaSOFPwRahvea0gMUcGUhVeAg/0BC0wiv9ih5NYPB1Wn1UEI1/L+xQ==",
+          "requires": {
+            "minimist": "^1.2.5"
+          }
+        },
         "rimraf": {
           "version": "2.7.1",
           "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.7.1.tgz",
diff --git a/src/repos/repos.service.spec.ts b/src/repos/repos.service.spec.ts
index aadb965..fccac1f 100644
--- a/src/repos/repos.service.spec.ts
+++ b/src/repos/repos.service.spec.ts
@@ -75,7 +75,7 @@ describe('ReposService', () => {
     it('should be checkout', async () => {
       await service.checkoutBranch(getTest1Project(), 'master');
       const filePath = join(
-        service.getWorkspaceRoot(getTest1Project()),
+        service.getWorkspaceRoot(getTest1Project(), 'master'),
         'README.md',
       );
       const text = await readFile(filePath, { encoding: 'utf-8' });
@@ -86,7 +86,7 @@ describe('ReposService', () => {
       await service.checkoutBranch(getTest1Project(), 'branch-a');
       await service.checkoutBranch(getTest1Project(), 'branch-b');
       const filePath = join(
-        service.getWorkspaceRoot(getTest1Project()),
+        service.getWorkspaceRoot(getTest1Project(), 'branch-b'),
         'branch-b.md',
       );
       const text = await readFile(filePath, { encoding: 'utf-8' });
@@ -100,7 +100,7 @@ describe('ReposService', () => {
     it('checkout the specified version', async () => {
       await service.checkoutBranch(getTest1Project(), 'master');
       const filePath = join(
-        service.getWorkspaceRoot(getTest1Project()),
+        service.getWorkspaceRoot(getTest1Project(), 'master'),
         'README.md',
       );
       const text = await readFile(filePath, { encoding: 'utf-8' });
@@ -112,7 +112,7 @@ describe('ReposService', () => {
     it('should be checkout', async () => {
       await service.checkoutCommit(getTest1Project(), '498c782685');
       const filePath = join(
-        service.getWorkspaceRoot(getTest1Project()),
+        service.getWorkspaceRoot(getTest1Project(), '498c782685'),
         'README.md',
       );
       const text = await readFile(filePath, { encoding: 'utf-8' });
@@ -121,7 +121,7 @@ describe('ReposService', () => {
     it('should be checkout right commit', async () => {
       await service.checkoutCommit(getTest1Project(), '7f7123fe5b');
       const filePath = join(
-        service.getWorkspaceRoot(getTest1Project()),
+        service.getWorkspaceRoot(getTest1Project(), '7f7123fe5b'),
         'README.md',
       );
       const text = await readFile(filePath, { encoding: 'utf-8' });
diff --git a/src/repos/repos.service.ts b/src/repos/repos.service.ts
index 04e4aa9..4696f72 100644
--- a/src/repos/repos.service.ts
+++ b/src/repos/repos.service.ts
@@ -19,10 +19,11 @@ export class ReposService {
     private readonly configService: ConfigService,
   ) {}
 
-  getWorkspaceRoot(project: Project): string {
+  getWorkspaceRoot(project: Project, subDir = ''): string {
     return join(
       this.configService.get<string>('workspaces.root'),
       project.name,
+      encodeURIComponent(subDir),
     );
   }
 
@@ -30,14 +31,14 @@ export class ReposService {
     // TODO:  获取锁，失败抛错。
   }
 
-  async getGit(project: Project) {
-    const workspaceRoot = this.getWorkspaceRoot(project);
+  async getGit(project: Project, subDir?: string) {
+    const workspaceRoot = this.getWorkspaceRoot(project, subDir);
     await this.lockWorkspace(workspaceRoot);
 
     const firstInit = await access(workspaceRoot, F_OK)
       .then(() => false)
       .catch(async () => {
-        await mkdir(workspaceRoot);
+        await mkdir(workspaceRoot, { recursive: true });
         return true;
       });
     const git = gitP(workspaceRoot);
@@ -69,7 +70,7 @@ export class ReposService {
   }
 
   async checkoutBranch(project: Project, branch: string) {
-    const git = await this.getGit(project);
+    const git = await this.getGit(project, branch);
     try {
       await git.fetch(DEFAULT_REMOTE_NAME, branch);
     } catch (err) {
@@ -87,7 +88,7 @@ export class ReposService {
   }
 
   async checkoutCommit(project: Project, commitNumber: string) {
-    const git = await this.getGit(project);
+    const git = await this.getGit(project, commitNumber);
     try {
       await git.fetch(DEFAULT_REMOTE_NAME);
     } catch (err) {