Fallback location for a namespace Laravel

Question

I have a library that I am autoloading in my Laravel project and I want to have a fallback for that library.

The reason is that on some systems, the library will be on a different location (depending on the development/production mode)

For e.g. this below is the package being used:

"autoload": {
    "psr-4": {
        ...
        "MyCompany\\MyPackage\\": "../../libraries/MyCompany/MyPackage/src/",
        ...
    }
},

If there is a production package in another location, I want to use it as first preference, and if not found then fallback to the above.

Can I do something like this:

"autoload": {
    "psr-4": {
        ...
        "MyCompany\\MyPackage\\": "../encrypted/MyCompany/MyPackage/",
        "MyCompany\\MyPackage\\": "../../libraries/MyCompany/MyPackage/src/",
        ...
    }
},

The use case is that on production servers, I will not have to keep the source and will be able to make it work with the encoded files.

Someone might think why don't I edit the composer.json file on server, I can not do that because that file tracked on git.