Hm, works for me...
$ cd /tmp
$ git clone https://github.com/morph027/pve-iso-2-pxe
Cloning into 'pve-iso-2-pxe'...
remote: Counting objects: 41, done.
remote: Total 41 (delta 0), reused 0 (delta 0), pack-reused 41
Unpacking objects: 100% (41/41), done.
Checking connectivity... done.
$ cd...