As the comments have said - you'd have to disable and then reenable chatter for whole object or modify the field tracking. You can do it outside business hours if it's some kind of data fix.
(let's ignore for a while the fact that the whole purpose of audit fields is to track history and you might get in trouble during audit even if it's a valid data fix ;))
You can also run the data fix, then find the Chatter entries created by you & delete them. At least it worked for me when I had to delete one user's entry created from field history tracking, you might be best trying it out first in a sandbox.
SELECT Id, Name,
(SELECT Id, Ttile, Body
WHERE Type = 'TrackedChange' AND CreatedById = :UserInfo.getUserId()
AND CreatedDate = TODAY
Loop through the results, build List of Ids for
FeedItems you want to delete and fire!