Why does an error occur when trying to clone a repository from github via SSH?

Question

git

Hello, when trying to clone a repository from github via SSH, the following problem occurs:

[RuntimeException]
Failed to execute git clone --mirror ' https://[email protected]:***@git.skeek
s.com/v3project/theme -mega.git' '/var/www/u1043449/test-site.ru/demo.ru/.c
omposer/cache/vcs/https---git.skeeks.com-v3project-theme-mega.git/'

Cloning into bare repository '/var/www/u1043449/test-site.ru/demo.ru/.comp
oser/cache/vcs/https---git.skeeks.com-v3project-theme-mega.git'.. .remote :
HTTP Basic: Access denied
fatal: Authentication failed for ' https://git.skeeks.com/v3project/theme-me
ga.git/' Ran

the commands from the sitehttps://github.com/v3project/app-v3-shop to the test-site.ru folder:
[email protected] [~/test-site.ru/demo.ru]# curl -sS https ://getcomposer.org/installer | COMPOSER_HOME=.composer php
[email protected] [~/test-site.ru/demo.ru]# COMPOSER_HOME=.composer php composer.phar create-project --prefer-dist --stability=dev v3project /app-v3-shop=dev-master demo.ru
Next, before the final installation, I am asked to enter the username and password from the github, I enter it, but everything is unsuccessful and the following error occurs:

Loading composer repositories with package information
Authentication required (git.skeeks.com ):
Username: [email protected]
Password:

[RuntimeException]
Failed to execute git clone --mirror ' https://[email protected]:***@git.skeek
s.com/v3project/theme-mega.git' '/var/www/u1043449/test-site. ru/demo.ru/.c
omposer/cache/vcs/https---git.skeeks.com-v3project-theme-mega.git/'

Cloning into bare repository '/var/www/u1043449/test-site.ru /demo.ru/.comp
oser/cache/vcs/https---git.skeeks.com-v3project-theme-mega.git'...
remote: HTTP Basic: Access denied
fatal: Authentication failed for ' https:/ /git.skeeks.com/v3project/theme-mega.git/
'

update [--prefer-source] [--prefer-dist] [--dry-run] [--dev] [--no-dev] [--lock] [--no-custom-installers] [- -no-autoloader] [--no-scripts] [--no-progress] [--no-suggest] [--with-dependencies] [--with-all-dependencies] [-v|vv|vvv| --verbose] [-o|--optimize-autoloader] [-a|--classmap-authoritative] [--apcu-autoloader] [--ignore-platform-reqs] [--prefer-stable] [-- prefer-lowest] [-i|--interactive] [--root-reqs] [--] []...

what could be the reason for this?