Download Git Bash

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Firebase CRUD Website

git clone https://github.com/imr-z/firebase-crud-website.git

Solution to this problem is to remove the git proxies.

Open your terminal through the administrator.
Then hit command git config --global -l
Then unset all HTTP and https proxies by below command
git config --global --unset-all http.proxy & git config --global --unset-all https.proxy
Now you can check it is removed from the list or not with the same command git config --global -l

Screenshot