Use relative git object paths to construct absolute ones before setting Envfix/git-env-repo-paths

2 files changed, 15 insertions, 1 deletions

diff --git a/lib/api/helpers/internal_helpers.rb b/lib/api/helpers/internal_helpers.rb
index 4c0db4d42b1..4b3c473b0bb 100644
--- a/lib/api/helpers/internal_helpers.rb
+++ b/lib/api/helpers/internal_helpers.rb
@@ -36,6 +36,18 @@ module API
         {}
       end
 
+      def fix_git_env_repository_paths(env, repository_path)
+        if obj_dir_relative = env['GIT_OBJECT_DIRECTORY_RELATIVE'].presence
+          env['GIT_OBJECT_DIRECTORY'] = File.join(repository_path, obj_dir_relative)
+        end
+
+        if alt_obj_dirs_relative = env['GIT_ALTERNATE_OBJECT_DIRECTORIES_RELATIVE'].presence
+          env['GIT_ALTERNATE_OBJECT_DIRECTORIES'] = alt_obj_dirs_relative.map { |dir| File.join(repository_path, dir) }
+        end
+
+        env
+      end
+
       def log_user_activity(actor)
         commands = Gitlab::GitAccess::DOWNLOAD_COMMANDS
 
diff --git a/lib/api/internal.rb b/lib/api/internal.rb
index 6e78ac2c903..451121a4cea 100644
--- a/lib/api/internal.rb
+++ b/lib/api/internal.rb
@@ -19,7 +19,9 @@ module API
         status 200
 
         # Stores some Git-specific env thread-safely
-        Gitlab::Git::Env.set(parse_env)
+        env = parse_env
+        env = fix_git_env_repository_paths(env, repository_path) if project
+        Gitlab::Git::Env.set(env)
 
         actor =
           if params[:key_id]