Context

For operation like computing source tracking, sfp copy the repository to a temp location.
this is needed for sfp to be able to checkout on different commits for each package, then use sf lib to compute tracking.

this copy operation can be very long on some workstations due to some company anti malware apps that are triggered due to the huge amount of file moved (like for node_modules/).

Proposition

Update the behaviour of the copy to copy only file that are used by salesforce for tracking.
I assume that .gitignore is safe for this as we may want to save in git all metadata used on org.