diff --git a/app/controllers/api/v1/projects/sync_repositories_controller.rb b/app/controllers/api/v1/projects/sync_repositories_controller.rb
index 1c98309d9..ec01ed84e 100644
--- a/app/controllers/api/v1/projects/sync_repositories_controller.rb
+++ b/app/controllers/api/v1/projects/sync_repositories_controller.rb
@@ -30,7 +30,11 @@ class Api::V1::Projects::SyncRepositoriesController < Api::V1::BaseController
       @sync_repositories = SyncRepository.where(project: @project, sync_direction: params[:sync_direction])
     end
     branch = params[:ref].split("refs/heads/")[-1]
-    @sync_repository_branches = SyncRepositoryBranch.where(sync_repository_id: @sync_repositories, gitlink_branch_name: branch, enable: true)
+    if params[:sync_direction].to_i == 1
+      @sync_repository_branches = SyncRepositoryBranch.where(sync_repository_id: @sync_repositories, gitlink_branch_name: branch, enable: true)
+    else 
+      @sync_repository_branches = SyncRepositoryBranch.where(sync_repository_id: @sync_repositories, external_branch_name: branch, enable: true)
+    end
     # 全部分支同步暂时不做
     # @sync_repositories.each do |item|
     #   TouchSyncJob.perform_later(item)
diff --git a/app/models/sync_repository_branch.rb b/app/models/sync_repository_branch.rb
index f23f5fe3d..4748cbec2 100644
--- a/app/models/sync_repository_branch.rb
+++ b/app/models/sync_repository_branch.rb
@@ -22,5 +22,17 @@ class SyncRepositoryBranch < ApplicationRecord
 
   belongs_to :sync_repository
 
+  before_destroy :unbind_reposyncer
+
   enum sync_status: {success: 1, failure: 2}
+
+
+  def unbind_reposyncer
+    if self.sync_repository.sync_direction.to_i == 1
+      Reposync::DeleteRepoService.call(self.sync_repository&.repo_name, self.gitlink_branch_name)
+    else 
+      Reposync::DeleteRepoService.call(self.sync_repository&.repo_name, self.external_branch_name)
+    end
+  end
+
 end