diff --git a/git-use.txt b/git-use.txt
index fa708d4..cc01b05 100644
--- a/git-use.txt
+++ b/git-use.txt
@@ -37,3 +37,6 @@ git log --oneline --abbrev-commit
 
 7.恢复某次提交删除的文件或者文件夹
 git checkout commitid -- /path/folder/to
+
+8.git更改分支master为main
+git branch -M main