I have been getting this sound ever few days for only a few minutes the it goes away I can hear it outside of the car also 2019 Honda Civic bought new from dealership 45 thousand miles it shifts and works great just squeaks sometimes
Well I would say start my spraying WD-40 on all the clutch pedal bushings that are up inside under the dash. Now. If it still makes a noise then it would be the master cylinder. Probably making a little noise but as long as it works I wouldn't worry about it
Thanks for your reply