Cannot connect to Github from SourceTree

[Edisson Suarez]

I'm getting the following error when connecting to Github and trying to Fetch or Pull any updates from our repositories.

"

git --no-optional-locks -c color.branch=false -c color.diff=false -c color.status=false -c diff.mnemonicprefix=false -c core.quotepath=false -c credential.helper=sourcetree fetch origin

remote: Support for password authentication was removed on August 13, 2021. Please use a personal access token instead.

remote: Please see https://github.blog/2020-12-15-token-authentication-requirements-for-git-operations/ for more information.

fatal: Authentication failed for 'https://github.com/accuratebg/terraform/'

remote: Support for password authentication was removed on August 13, 2021. Please use a personal access token instead.

remote: Please see https://github.blog/2020-12-15-token-authentication-requirements-for-git-operations/ for more information.

fatal: Authentication failed for 'https://github.com/accuratebg/terraform/'

Completed with errors, see aboveremote: Support for password authentication was removed on August 13, 2021. Please use a personal access token instead.

remote: Please see https://github.blog/2020-12-15-token-authentication-requirements-for-git-operations/ for more information.

fatal: Authentication failed for 'https://github.com/accuratebg/terraform/'

remote: Support for password authentication was removed on August 13, 2021. Please use a personal access token instead.

remote: Please see https://github.blog/2020-12-15-token-authentication-requirements-for-git-operations/ for more information.

fatal: Authentication failed for 'https://github.com/accuratebg/terraform/'

Completed with errors, see above
"

I'm running SourceTree from Mac and trying to figure out how to authenticate.

[dwlorimer]

Take a look at the accepted answer on this thread for a workaround that worked for me:
https://community.atlassian.com/t5/Sourcetree-questions/Sourcetree-ignores-github-token-and-throws-403-error/qaq-p/1778978#U1785059