git push -u origin main
error: src refspec main does not match any
error: failed to push some refs to 'https:

原因是没发现main分支,切换到main分支,再次测试即可

$ git checkout main
Switched to branch 'main'
Your branch is up to date with 'origin/main'

或者可以用git branch查看有哪些分支

查看本地分支

$ git branch
* main
  master

查看远程分支

$ git branch -r
  origin/main
  origin/master

查看所有分支,包括本地和远程

$ git branch -a
* main
  master
  remotes/origin/main
  remotes/origin/master

总结

• 无法推送到某分支,先确认是否有该分支