php - How can I link a composer lib to a local source?

The case is that I have a main project using a composer lib made by someone on my team, and I don't have write access in this lib repository, so any change done in this lib needs to be commited, pull requested and published to be updated in the main project (by composer update).

Is there some way to link this lib folder on my main project, to my locally forked source, so I can use my own changes skiping this whole proccess?

P.S. I can't change the source oncomposer.json. It would be good if we can overwrite some items in composer using like ascomposer-custom.json as we can do in the Vagrant settings.