VSTS keeps generating new personal access tokens

Question

Recently I've been getting an email almost exactly every 20 minutes so with the subject "Visual Studio Team Services personal access token added". The content is something like this:

A new personal access token was added to your account
    Git: https://[company account].visualstudio.com/ on [USER]
    Scopes: vso.code_write vso.packaging
    Expiration: 7/4/2019

The regularity makes me think it's something automatic doing it, but I don't know what that could be.

Answer 1

The auto generated PAT description with the format Git: https://[account].visualstudio.com/ on [machine] with the scopes Code (read and write) and Packaging (read) is caused by cloning VSTS git repo.

So please check if someone (or some code execute git clone operation) cloned VSTS git repo(s) on different machnes periodly.