How to change Firebase user login identity from command line (CLI)?

use this

firebase login --reauth

then you can change account

Manage multiple users via the CLI

You can manage multiple users without re-authenticating, as of version 9.9.0 of the Firebase CLI.

firebase login:add
firebase login:list
firebase login:use

Example:

firebase login:add [email protected]
firebase login:add [email protected]
firebase login:add [email protected]
firebase login:use [email protected]
firebase login:list
firebase deploy --only hosting # deploy as [email protected]

Get a URL printed to the terminal.

firebase login --reauth

Use that link in the browser with the needed profile.

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Still working, less convenient older answer

The easiest way to handle this is to logout User-Alice and the login User-Bob.

firebase logout
firebase login

But, if you're logged as User-Alice with a Google account in the browser you'll need to sign out there first.