Update readme.md (#2502)

Author: Jun-Howie

docs/L0/git/readme.md

@@ -357,20 +357,30 @@ https://github.com/InternLM/Tutorial/tree/camp4
       <img src="https://github.com/random-zhou/ailabImage/blob/main/docimg3.jpg" alt="Description of the image" style="height: auto; width: 800px; margin: 10px auto; padding: 8px 8px 0 8px; border: 1px solid #3f3f3f">
     </td>
   </tr>
+</table>  
+
+### **注意取消勾选仅克隆当前分支**
+<table align="center">
+  <tr>
+    <td align="center">
+      <img src="https://github.com/Jun-Howie/AIPPT-for-InternLM/blob/main/images/fork.png" alt="Description of the image" style="height: auto; width: 800px; margin: 10px auto; padding: 8px 8px 0 8px; border: 1px solid #3f3f3f">
+    </td>
+  </tr>
 </table>
 
 <table align="center">
   <tr>
     <td align="center">
-      <img src="https://github.com/random-zhou/ailabImage/blob/main/docimg4.png" alt="Description of the image" style="height: auto; width: 800px; margin: 10px auto; padding: 8px 8px 0 8px; border: 1px solid #3f3f3f">
+      <img src="https://github.com/Jun-Howie/AIPPT-for-InternLM/blob/main/images/branch.png" alt="Description of the image" style="height: auto; width: 800px; margin: 10px auto; padding: 8px 8px 0 8px; border: 1px solid #3f3f3f">
     </td>
   </tr>
 </table>
 
+
 <table align="center">
   <tr>
     <td align="center">
-      <img src="https://github.com/random-zhou/ailabImage/blob/main/docimg5.jpg" alt="Description of the image" style="height: auto; width: 800px; margin: 10px auto; padding: 8px 8px 0 8px; border: 1px solid #3f3f3f">
+      <img src="https://github.com/Jun-Howie/AIPPT-for-InternLM/blob/main/images/download.png" alt="Description of the image" style="height: auto; width: 800px; margin: 10px auto; padding: 8px 8px 0 8px; border: 1px solid #3f3f3f">
     </td>
   </tr>
 </table>