如果其他人已推送与您相同的分支，Git 将无法推送您的更改：
$ git push origin master
> To https://hostname/USERNAME/REPOSITORY.git
> ! [rejected] master -> master（非快进）
> 错误：无法推送某些 ref 至 'https://hostname/USERNAME/REPOSITORY.git'
> 为防止丢失历史记录，非快进更新已被拒绝
> 再次推送前合并远程更改（例如： ‘git pull’）。 [rejected] main -> main (non-fast-forward)
> error: failed to push some refs to 'https://hostname/USERNAME/REPOSITORY.git'
> To prevent you from losing history, non-fast-forward updates were rejected
> Merge the remote changes (e.g. 'git pull') before pushing again. 请参阅
> “git 推送帮助”部分的“快进说明”以了解详细信息。通过获取和合并远程分支上所做更改与本地所做更改，您可以解决此问题：
$ git fetch origin
# Fetches updates made to an online repository
$ git merge origin YOUR_BRANCH_NAME
# Merges updates made online with your local work或者，可以只是使用 git pull 一次性执行两个命令：
$ git pull origin YOUR_BRANCH_NAME
# Grabs online updates and merges them with your local work