For learning how git works internally and to implement the basic git commands.

The entry point for the Git implementation is in app/main.py

To initialize a git repository

python3 app/main.py init

To hash_object

python3 app/main.py hash_object -w <file_path>

To cat_file

python3 app/main.py cat_file -p <hash>

To print tree

python3 app/main.py ls-tree <hash-of-tree>

I suggest executing mygit.sh in a different folder when testing locally. For example:

mkdir -p /tmp/testing && cd /tmp/testing
/path/to/your/repo/mygit.sh init

To make this easier to type out, you could add a shell alias:

alias mygit=/path/to/your/repo/mygit.sh

mkdir -p /tmp/testing && cd /tmp/testing
mygit init