例如"PyTorch_tutorial_0.0.5"的pytorch的第八页Code/1_data_prepare/1_1_cifar10_to_png.py,为什么Github上"链接另存为"与Clone or download出来的有区别?链接另存为虽然保存的也是.py文件,再在此文件后加上.html后缀,打开就是该网页,保存的实际是网页

谷歌搜索: Github difference clone download
When you clone you get a copy of the history and it is a functional git repo. Downloading a repository just downloads the files from the most recent commit of the default branch. It doesn't download any of the files in the .git folder. ... It's as ifgit never existed, and all you have is a copy of the code/files.
Zhengxia said, if you clone a project, you can have v1, v2 and the most recent version. If you download a project, you can only have the 
most recent version. 

怎么clone,没什么特别讲究吧,还有网址? 
This is with Zhengxia's help.