We are given a prompt to enter git commands. After some trial and error we can see that the `git grep` command is allowed. Knowing the flag format is `0xL4ugh{something}` we can use `grep ugh` and that should find all files that have the string `ugh` and should print out the flag.
```bash┌──(kali㉿kali)-[~/Desktop/git]└─$ nc 172.190.120.133 50001
 _____ _ _  ___  ___                   |  __ (_) | |  \/  |                   | |  \/_| |_| .  . | ___  _____      __ | | __| | __| |\/| |/ _ \/ _ \ \ /\ / / | |_\ \ | |_| |  | |  __/ (_) \ V  V /   \____/_|\__\_|  |_/\___|\___/ \_/\_/   
[+] Welcome challenger to the epic GIT Madness, can you read /flag.txt?Enter git commands (Enter an empty line to end):grep ugh 
flag.txt:0xL4ugh{GiT_D0c3_F0r_Th3_WiN}
```
Flag: `0xL4ugh{GiT_D0c3_F0r_Th3_WiN}`