args.object_dir = getenv_safe(&to_free, DB_ENVIRONMENT);
args.graft_file = getenv_safe(&to_free, GRAFT_ENVIRONMENT);
args.index_file = getenv_safe(&to_free, INDEX_ENVIRONMENT);
+ args.alternate_db = getenv_safe(&to_free, ALTERNATE_DB_ENVIRONMENT);
repo_set_gitdir(the_repository, git_dir, &args);
argv_array_clear(&to_free);