How to remove Failed to execute git clone --no-checkout error?

Question

GitHub

Hello, I made a private repository on github, uploaded the project there, when I try to download it via composer:

[RuntimeException]
Failed to execute git clone --no-checkout " https://***:***@github.com/test /mytest.git " "W:\domains\yii2basic.ru\vendor\test\mytest" && cd /D "W:\dom
ains\yii2basic.ru\vendor\test\mytest" && git remote add composer " https: //***:***@github.com/test/mytest.git " && git fetch composer

{
"type": "package",
"package": {
"name": "test/mytest",
"version ": "1.0",
"source": {
"url": "[email protected]/mytest.git",
"type": "git",
"reference": "........."
}
}
}

What's wrong? Where to look?