1 问题复现
在把文件推送到远程仓库时，出现了如下错误。
错误原因：没有“master”分支。
2 问题解决
1，查看现有分支；
(base) mac@macbook DesignPatterns % git branch
* main
2，创建新分支并转移到新分支；
(base) mac@macbook DesignPatterns % git checkout -b "master"
Switched to a new branch 'master'
3，合并分支；
(base) mac@macbook DesignPatterns % git merge main
Already up to date.
4，重新上传。
(base) mac@macbook DesignPatterns % git push -u origin "master"
Enumerating objects: 48, done.
Counting objects: 100% (48/48), done.
Delta compression using up to 8 threads
Compressing objects: 100% (44/44), done.
Writing objects: 100% (48/48), 9.94 KiB | 3.31 MiB/s, done.
Total 48 (delta 8), reused 0 (delta 0), pack-reused 0
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