Force credentials for every click?

Question

How do I make git request credentials (username + password) every time you click?

We have a shared host where the git log repository takes care of the version controlling a bunch of files. I want to pull the repository to a remote location via http and each time request a username + password (since this is a shared host, this ensures that we keep track of who is responsible for the latest changes).

I did:

git init
git remote add origin http://remote.host/the_git_repo

However, when I click, I get HTTP 401 error and without username / password :

[user @thehost ~] # git push -u origin master error: requested URL returned error: 401 Unauthorized access while accessing http://remote.host/the_git_repo/info/refs

fatal: HTTP request failed

File contents .git/config:

[core]
        repositoryformatversion = 0
        filemode = true
        bare = false
        logallrefupdates = true
        askpass = true
[remote "origin"]
        url = http://remote.host/the_git_repo
        fetch = +refs/heads/*:refs/remotes/origin/*

Notes:

• SSH login not available for this remote repo
• I read the documentation about environment variables SSH_ASKPASSand GIT_ASKPASSbut it is not clear how to use them ( export GIT_ASKPASS=1does nothing)
• This is similar to this question , the difference is that the repository has just been created and no one has added any credentials yet