I found this recently, after one of update of skara tools (probably)
git sync asks for password every time, even tho the credentials are stored in osx keychain.

steps to reproduce for me:
remove github credentials from osx keychain

$ git token store https://github.com
info: if you are prompted for a password, fill in your personal access token,
      *not* your login password for https://github.com
Username for 'https://github.com': VladimirKempik
Password for 'https://VladimiKempik@github.com':

$ git sync -ff
Syncing upstream/master to origin/master... Username for 'https://github.com':

I've tried allowing access to github credentials ( in osx keychain) to everyone - no change
the token is right, it works if passed manually.

git version 2.30.1, skara tools are latest at the moment of writing.

but git push (to personal GH fork) is working fine.