from pathlib import Path
import asyncssh

conn = asyncssh.connect(env.SFTP_STORE_HOST,
                            username=env.SFTP_STORE_USERNAME,
                            password=env.SFTP_STORE_PASSWORD,
                            known_hosts=None
                            )
sftp = await conn.start_sftp_client()

tmp_archive_store = Path('/data/tmp_archive_store/')
remote_path = env.SFTP_STORE_REMOTE_DIR / file_name
await sftp.get(str(remote_path), str(tmp_archive_store))