在git 2.40.0中，--force不会改变git push在没有设置上游的情况下（当没有设置push.default和push.autoSetupRemote配置时）的行为。

$ git checkout -b dev/test
Switched to a new branch 'dev/test'
$ git push
fatal: The current branch dev/test has no upstream branch.
To push the current branch and set the remote as upstream, use

    git push --set-upstream origin dev/test

To have this happen automatically for branches without a tracking
upstream, see 'push.autoSetupRemote' in 'git help config'.

$ git push --force
fatal: The current branch dev/test has no upstream branch.
To push the current branch and set the remote as upstream, use

    git push --set-upstream origin dev/test

To have this happen automatically for branches without a tracking
upstream, see 'push.autoSetupRemote' in 'git help config'.