update git download instruction

README.md

@@ -54,6 +54,7 @@ We use `data-intermediate.tar.zst` as an example here.
 
 #### by directly download
 
+You can selectively download certain variation of your choice.
 ![](direct_download_data-intermediate.png)
 
 #### by git
@@ -68,6 +69,15 @@ git clone https://huggingface.co/datasets/mango-ttic/data-intermediate
 # git clone https://hf-mirror.com/datasets/mango-ttic/data-intermediate
 ```
 
+If you want to clone without large files - just their pointers
+
+```bash
+GIT_LFS_SKIP_SMUDGE=1 git clone https://huggingface.co/datasets/mango-ttic/data-intermediate
+
+# or, use hf-mirror if your connection to huggingface.co is slow
+# GIT_LFS_SKIP_SMUDGE=1 git clone https://hf-mirror.com/datasets/mango-ttic/data-intermediate
+```
+
 ### 2. decompress
 
 Because some json files are huge, we use tar.zst to package the data efficiently.