Convert postgres timestamp with timezone between timezones

I have data stored in a timestamp with timezone column (timestamptz) in UTC.

I want to query in a different timezone (Australia/Sydney +10) but retain the timezone

SELECT 
	'2022-05-04 14:00:01.546+00'::timestamp AT time zone 'UTC',
	timezone('Australia/Sydney', '2022-05-04 14:00:01.546+00'::timestamp AT time zone 'UTC')
;

This returns:

"2022-05-04 14:00:01.546+00" timestamp with time zone

"2022-05-05 00:00:01.546" timestamp without time zone

What I want is:

"2022-05-05 00:00:01.546+10" timestamp with time zone

i.e. convert from +00 to +10 and retain the time zone. I keep finding examples that convert to local time without the timezone info. I'm trying to map to a pyarrow.Table and want to infer the correct type timestamp[ns, tz=Australia/Sydney] rather than timestamp[ns, tz=UTC]

Edit: To make it clearer I've tried the following:

select
	ts,
	timezone('Australia/Sydney', ts),
	ts at time zone 'Australia/Sydney'
from timeseries
limit 1

The way PostgreSQL works, the only way to get the output 2022-05-05 00:00:01.546+10 is to set the timezone parameter to a time zone with that UTC offset:

SET timezone = 'Australia/Sydney';