i want to clone file from github server

[shem thaddeas]

actually my friend already made a private repitory at github and i want to clone it but i couldn't clone that file.

it said not a valid path and then this message is show up

Command: git -c diff.mnemonicprefix=false -c core.quotepath=false --no-optional-locks ls-remote https://github.com/Dragonfly-Maeda/dragonfly.git
Output:
Error: fatal: credential-cache unavailable; no unix socket support
fatal: credential-cache unavailable; no unix socket support
remote: Support for password authentication was removed on August 13, 2021.
remote: Please see https://docs.github.com/en/get-started/getting-started-with-git/about-remote-repositories#cloning-with-https-urls for information on currently recommended modes of authentication.
fatal: Authentication failed for 'https://github.com/Dragonfly-Maeda/dragonfly.git/'

so i search at internet and said that my setting is wrong and i want to try fix it with this command prompt

git config --global --unset credential.helper

but i did not do anything what should i do to fix this