diff --git a/src/repos/dtos/checkout.input.ts b/src/repos/dtos/checkout.input.ts
new file mode 100644
index 0000000..0694ad7
--- /dev/null
+++ b/src/repos/dtos/checkout.input.ts
@@ -0,0 +1,16 @@
+import { InputType } from '@nestjs/graphql';
+import { IsOptional, IsString, IsUUID } from 'class-validator';
+
+@InputType()
+export class CheckoutInput {
+  @IsUUID()
+  projectId: string;
+
+  @IsString()
+  @IsOptional()
+  branch?: string;
+
+  @IsString()
+  @IsOptional()
+  commitNumber?: string;
+}
diff --git a/src/repos/dtos/list-logs.args.ts b/src/repos/dtos/list-logs.args.ts
index 1eed6f2..70ab5f3 100644
--- a/src/repos/dtos/list-logs.args.ts
+++ b/src/repos/dtos/list-logs.args.ts
@@ -1,4 +1,4 @@
-import { InputType, ObjectType } from '@nestjs/graphql';
+import { InputType } from '@nestjs/graphql';
 import { IsOptional, IsString, IsUUID } from 'class-validator';
 
 @InputType()
diff --git a/src/repos/repos.module.ts b/src/repos/repos.module.ts
index ae00feb..0e22a10 100644
--- a/src/repos/repos.module.ts
+++ b/src/repos/repos.module.ts
@@ -4,9 +4,10 @@ import { Project } from '../projects/project.entity';
 import { ReposResolver } from './repos.resolver';
 import { ReposService } from './repos.service';
 import { ConfigModule } from '@nestjs/config';
+import { ProjectsModule } from '../projects/projects.module';
 
 @Module({
-  imports: [TypeOrmModule.forFeature([Project]), ConfigModule],
+  imports: [TypeOrmModule.forFeature([Project]), ConfigModule, ProjectsModule],
   providers: [ReposResolver, ReposService],
 })
 export class ReposModule {}
diff --git a/src/repos/repos.resolver.ts b/src/repos/repos.resolver.ts
index 5da9bac..aba422c 100644
--- a/src/repos/repos.resolver.ts
+++ b/src/repos/repos.resolver.ts
@@ -1,13 +1,18 @@
-import { Args, Query, Resolver } from '@nestjs/graphql';
+import { Args, Mutation, Query, Resolver } from '@nestjs/graphql';
 import { ListLogsArgs } from './dtos/list-logs.args';
 import { ReposService } from './repos.service';
 import { LogList } from './dtos/log-list.model';
 import { ListBranchesArgs } from './dtos/list-branches.args';
 import { BranchList } from './dtos/branch-list.model';
+import { CheckoutInput } from './dtos/checkout.input';
+import { ProjectsService } from '../projects/projects.service';
 
 @Resolver()
 export class ReposResolver {
-  constructor(private readonly service: ReposService) {}
+  constructor(
+    private readonly service: ReposService,
+    private readonly projectService: ProjectsService,
+  ) {}
   @Query(() => LogList)
   async listLogs(@Args('listLogsArgs') dto: ListLogsArgs) {
     return await this.service.listLogs(dto);
@@ -23,4 +28,10 @@ export class ReposResolver {
       };
     });
   }
+  @Mutation(() => Boolean)
+  async checkout(@Args('checkoutInput') dto: CheckoutInput): Promise<true> {
+    const project = await this.projectService.findOne(dto.projectId);
+    await this.service.checkoutCommit(project, dto.commitNumber);
+    return true;
+  }
 }