Any brick layers tips for cleaning bricks after DIY repair?

[Raycaster]

I had 2 sets of windows sills at the back of the house that needed replacing after the majority of bricks cracked.

Either the house shifted or there was never enough slope for drainage.

Anyways, I had left over matching bricks from converting my 2 door garage to a single...( to get my boat in of course ).

 

Well I replaced all the broken bricks and tired to keep as clean as possible but there is a "glaze" of mortar from my messy job covering most of the bricks.

I tried washing with a hose and soft brushing it off after the bricks dried but there is still a glaze.

Do I have to just keep repeating till its gone or do I have to use acid? Soap?

Any help appreciated..Thx ahead.