CAST AS binary doesn't return binary

Python 3.8.2rc2+ (heads/3.8-dirty:44c6901, Jul 28 2020, 18:31:20) 

[GCC 8.3.0] on linux

Type "help", "copyright", "credits" or "license" for more information.

>>> import mariadb

>>> 

>>> conn= mariadb.connect()

>>> cursor=conn.cursor()

>>> cursor.execute("SELECT CAST('foo' AS BINARY) AS anon_1 WHERE 1=?", (1,))

>>> cursor.fetchone()

('foo',)

>>> cursor.execute("SELECT CAST('foo' AS BINARY) AS anon_1")

>>> cursor.fetchone()

('foo',)