Geo: Recovery from temporary directory doesn't work if the namespace directory doesn't exist

ee/app/services/geo/base_sync_service.rb

@@ -211,6 +211,8 @@ module Geo
         raise Gitlab::Shell::Error, 'Can not move original repository out of the way'
       end
 
+      gitlab_shell.add_namespace(project.repository_storage_path, repository.disk_path)
+
       unless gitlab_shell.mv_repository(project.repository_storage_path, disk_path_temp, repository.disk_path)
         raise Gitlab::Shell::Error, 'Can not move temporary repository'
       end

ee/spec/services/geo/repository_sync_service_spec.rb

@@ -254,14 +254,21 @@ describe Geo::RepositorySyncService do
 
         expect(subject).to receive(:sync_repository).with(true).and_call_original
         expect(subject.gitlab_shell).to receive(:mv_repository).exactly(2).times.and_call_original
+
+        expect(subject.gitlab_shell).to receive(:add_namespace).with(
+          project.repository_storage_path,
+          "@failed-geo-sync/#{repository.disk_path}"
+        ).and_call_original
+
+        expect(subject.gitlab_shell).to receive(:add_namespace).with(
+          project.repository_storage_path,
+          repository.disk_path
+        ).and_call_original
+
         expect(subject.gitlab_shell).to receive(:remove_repository).exactly(2).times.and_call_original
 
         subject.execute
 
-        # gitlab-shell always appends .git to the end of the repository, so
-        # we're relying on the fact that projects can't contain + in the name
-        deleted_dir = File.join(project.repository_storage_path, project.path) + "+failed-geo-sync.git"
-        expect(File.directory?(deleted_dir)).to be false
         expect(File.directory?(project.repository.path)).to be true
       end