update

git/change_repo.md

@@ -1,5 +1,33 @@
 # 如何迁移git项目
 
+#### Create a new repository
 
-- git remote set-url origin ************（项目地址）
-- git push
+``` bash
+git clone *************.git
+cd existing_repo
+touch README.md
+git add README.md
+git commit -m "add README"
+git push -u origin master
+```
+
+#### Existing folder
+
+``` bash
+cd existing_folder
+git init
+git remote add origin *************.git
+git add .
+git commit -m "Initial commit"
+git push -u origin master
+```
+
+#### Existing Git repository
+
+```bash
+cd existing_repo
+git remote rename origin old-origin
+git remote add origin *************.git
+git push -u origin --all
+git push -u origin --tags
+```