diff --git a/src/apps/apps.service.ts b/src/apps/apps.service.ts
index ef5b048..b396350 100644
--- a/src/apps/apps.service.ts
+++ b/src/apps/apps.service.ts
@@ -30,6 +30,8 @@ const serviceAccountDir = '/var/run/secrets/kubernetes.io/serviceaccount';
 
 @Injectable()
 export class AppsService {
+  private giteaUsername?: string;
+
   constructor(
     private readonly prisma: PrismaService,
     private readonly configService: ConfigService,
@@ -288,7 +290,23 @@ export class AppsService {
       throw new BadRequestException('성공한 빌드 작업만 릴리즈에 포함할 수 있습니다.');
     }
 
-    const branch = body.branch?.trim() || buildJobs[0]?.branch || 'release';
+    const invalidBranch = buildJobs.find((job) => job.branch !== 'develop');
+    if (invalidBranch) {
+      throw new BadRequestException('develop 브랜치에서 성공한 빌드만 릴리즈로 승격할 수 있습니다.');
+    }
+
+    const missingCommit = buildJobs.find((job) => !job.commitSha);
+    if (missingCommit) {
+      throw new BadRequestException('실제 커밋 SHA가 기록된 빌드만 릴리즈로 승격할 수 있습니다.');
+    }
+
+    const branch = body.branch?.trim() || 'release';
+    if (branch !== 'release') {
+      throw new BadRequestException('앱 릴리즈 대상 브랜치는 release만 사용할 수 있습니다.');
+    }
+
+    await this.promoteReleaseBranches(buildJobs, 'develop', branch);
+
     const commitShas = [...new Set(buildJobs.map((job) => job.commitSha).filter(Boolean))];
     const artifact = buildJobs.find((job) => job.artifact)?.artifact ?? null;
     const imageTags = createReleaseImageTags(buildJobs, app.components);
@@ -309,6 +327,143 @@ export class AppsService {
     return { release };
   }
 
+
+  private async promoteReleaseBranches(
+    buildJobs: Array<{
+      id: string;
+      branch: string;
+      commitSha: string | null;
+      component: {
+        name: string;
+        repository: string | null;
+      };
+    }>,
+    sourceBranch: string,
+    targetBranch: string,
+  ) {
+    const byRepository = new Map<string, string>();
+    for (const job of buildJobs) {
+      const repository = job.component.repository?.trim();
+      if (!repository || !job.commitSha) continue;
+      const current = byRepository.get(repository);
+      if (current && current !== job.commitSha) {
+        throw new BadRequestException(
+          `${repository} 저장소에 서로 다른 커밋의 빌드가 선택되었습니다.`,
+        );
+      }
+      byRepository.set(repository, job.commitSha);
+    }
+
+    if (byRepository.size === 0) return;
+
+    const workRoot = path.join(os.tmpdir(), 'studio-admin-release-promotions');
+    await fs.mkdir(workRoot, { recursive: true });
+
+    for (const [repository, commitSha] of byRepository) {
+      const workDir = path.join(workRoot, `${sanitizeImageName(repository)}-${Date.now()}`);
+      try {
+        await fs.rm(workDir, { recursive: true, force: true });
+        await execFileAsync(this.configService.get<string>('GIT_BIN', 'git'), [
+          'clone',
+          '--no-checkout',
+          await this.getAuthenticatedHttpCloneUrl(repository),
+          workDir,
+        ]);
+        await execFileAsync(this.configService.get<string>('GIT_BIN', 'git'), [
+          'fetch',
+          'origin',
+          sourceBranch,
+        ], { cwd: workDir });
+        await execFileAsync(this.configService.get<string>('GIT_BIN', 'git'), [
+          'fetch',
+          'origin',
+          targetBranch,
+        ], { cwd: workDir }).catch(() => undefined);
+
+        const targetExists = await gitRefExists(workDir, `refs/remotes/origin/${targetBranch}`, this.configService.get<string>('GIT_BIN', 'git'));
+        if (targetExists) {
+          await execFileAsync(this.configService.get<string>('GIT_BIN', 'git'), [
+            'checkout',
+            '-B',
+            targetBranch,
+            `origin/${targetBranch}`,
+          ], { cwd: workDir });
+          await execFileAsync(this.configService.get<string>('GIT_BIN', 'git'), [
+            'merge',
+            '--ff-only',
+            commitSha,
+          ], { cwd: workDir });
+        } else {
+          await execFileAsync(this.configService.get<string>('GIT_BIN', 'git'), [
+            'checkout',
+            '-B',
+            targetBranch,
+            commitSha,
+          ], { cwd: workDir });
+        }
+
+        await execFileAsync(this.configService.get<string>('GIT_BIN', 'git'), [
+          'push',
+          'origin',
+          `HEAD:refs/heads/${targetBranch}`,
+        ], { cwd: workDir });
+      } catch (error) {
+        const message = error instanceof Error ? error.message : 'Unknown git promotion failure';
+        throw new BadRequestException(`${repository} release 브랜치 승격 실패: ${message}`);
+      } finally {
+        await fs.rm(workDir, { recursive: true, force: true }).catch(() => undefined);
+      }
+    }
+  }
+
+  private getHttpCloneUrl(repository: string) {
+    return `${this.configService
+      .get<string>('GITEA_BASE_URL', 'http://localhost:3000')
+      .replace(/\/$/, '')}/${repository}.git`;
+  }
+
+  private async getAuthenticatedHttpCloneUrl(repository: string) {
+    const baseUrl = this.getHttpCloneUrl(repository);
+    const token = this.configService.get<string>('GITEA_ADMIN_TOKEN');
+    if (!token) return baseUrl;
+
+    const username =
+      this.configService.get<string>('BUILD_GIT_USERNAME') ??
+      (await this.getGiteaUsername(token));
+    const url = new URL(baseUrl);
+    url.username = username;
+    url.password = token;
+    return url.toString();
+  }
+
+  private async getGiteaUsername(token: string) {
+    if (this.giteaUsername) return this.giteaUsername;
+
+    const response = await fetch(
+      `${this.configService
+        .get<string>('GITEA_BASE_URL', 'http://localhost:3000')
+        .replace(/\/$/, '')}/api/v1/user`,
+      {
+        headers: {
+          Accept: 'application/json',
+          Authorization: `token ${token}`,
+        },
+      },
+    );
+
+    if (!response.ok) {
+      throw new BadRequestException(`Gitea 사용자 확인 실패: ${response.status}`);
+    }
+
+    const data = (await response.json()) as { login?: string };
+    if (!data.login) {
+      throw new BadRequestException('Gitea 토큰 사용자명을 확인할 수 없습니다.');
+    }
+
+    this.giteaUsername = data.login;
+    return data.login;
+  }
+
   listDeployments(appKey?: string) {
     return this.prisma.deploymentJob.findMany({
       where: appKey ? { app: { key: appKey } } : undefined,
@@ -2314,6 +2469,16 @@ function parseReleaseImageTags(value: Prisma.JsonValue | null) {
   return { images };
 }
 
+
+async function gitRefExists(workDir: string, ref: string, gitBin = 'git') {
+  try {
+    await execFileAsync(gitBin, ['show-ref', '--verify', '--quiet', ref], { cwd: workDir });
+    return true;
+  } catch {
+    return false;
+  }
+}
+
 function createReleaseImageTags(
   buildJobs: Array<{
     id: string;
diff --git a/src/apps/build-runner.service.ts b/src/apps/build-runner.service.ts
index 1068a6c..819ec87 100644
--- a/src/apps/build-runner.service.ts
+++ b/src/apps/build-runner.service.ts
@@ -1,9 +1,10 @@
-import { spawn, type ChildProcess } from 'node:child_process';
+import { execFile, spawn, type ChildProcess } from 'node:child_process';
 import { createHash } from 'node:crypto';
 import { createReadStream } from 'node:fs';
 import { promises as fs } from 'node:fs';
 import * as os from 'node:os';
 import * as path from 'node:path';
+import { promisify } from 'node:util';
 
 import {
   Injectable,
@@ -17,6 +18,8 @@ import { PutObjectCommand, S3Client } from '@aws-sdk/client-s3';
 
 import { PrismaService } from '../prisma/prisma.service';
 
+const execFileAsync = promisify(execFile);
+
 type BuildJobWithComponent = BuildJob & {
   component: AppComponent & {
     app: App;
@@ -237,6 +240,29 @@ export class BuildRunnerService implements OnModuleInit, OnModuleDestroy {
         onProcessEnd: () => this.activeProcesses.delete(job.id),
       });
     }
+
+    const resolvedCommitSha = await resolveGitHead(workDir, this.configService.get<string>('GIT_BIN', 'git'));
+    if (resolvedCommitSha && resolvedCommitSha !== job.commitSha) {
+      const artifact = getBuildArtifact(job.component, job.branch, resolvedCommitSha);
+      const image = getBuildImage(
+        job.component,
+        job.branch,
+        resolvedCommitSha,
+        this.configService.get<string>('BUILD_REGISTRY', 'registry.local'),
+      );
+      await this.prisma.buildJob.update({
+        where: { id: job.id },
+        data: {
+          commitSha: resolvedCommitSha,
+          artifact,
+          image,
+        },
+      });
+      job.commitSha = resolvedCommitSha;
+      job.artifact = artifact;
+      job.image = image;
+      await append(`[checkout] resolved commit ${resolvedCommitSha}`);
+    }
   }
 
   private async executeByComponentType(
@@ -567,6 +593,64 @@ export class BuildRunnerService implements OnModuleInit, OnModuleDestroy {
   }
 }
 
+
+async function resolveGitHead(workDir: string, gitBin = 'git') {
+  const { stdout } = await execFileAsync(gitBin, ['rev-parse', 'HEAD'], { cwd: workDir });
+  return stdout.trim() || null;
+}
+
+function getBuildArtifact(
+  component: { name: string; type: string },
+  branch: string,
+  commitSha: string | null,
+) {
+  const suffix = getBuildSuffix(branch, commitSha);
+
+  if (component.type === 'ELECTRON') {
+    return `${component.name}-${suffix}.AppImage`;
+  }
+
+  if (component.type === 'MIGRATION') {
+    return `${component.name}:${branch}:migration-check`;
+  }
+
+  return null;
+}
+
+function getBuildImage(
+  component: { name: string; type: string },
+  branch: string,
+  commitSha: string | null,
+  registry: string,
+) {
+  if (component.type === 'ELECTRON' || component.type === 'MIGRATION') {
+    return null;
+  }
+
+  return `${registry.replace(/\/$/, '')}/${sanitizeImageName(
+    component.name,
+  )}:${sanitizeImageTag(getBuildSuffix(branch, commitSha))}`;
+}
+
+function getBuildSuffix(branch: string, commitSha: string | null) {
+  return commitSha ? commitSha.slice(0, 7) : branch;
+}
+
+function sanitizeImageName(value: string) {
+  return value
+    .trim()
+    .toLowerCase()
+    .replace(/[^a-z0-9._/-]+/g, '-')
+    .replace(/^-+|-+$/g, '');
+}
+
+function sanitizeImageTag(value: string) {
+  return value
+    .trim()
+    .replace(/[^A-Za-z0-9_.-]+/g, '-')
+    .replace(/^-+|-+$/g, '');
+}
+
 async function runCommand({
   jobId,
   command,