Have you come across to someone that thinks you don't deserve a job because you don't have GitHub contributions?
Run this program.
For example, commit 10 commits max every day for two years, and avoid committing on Saturday and Sunday:
go run main.go -max=10 -skip-weekend=true
I obviously built this tool as a joke and don't encourage anyone to use it. It's a demonstration that GitHub contributions can be faked, and they are not a measure. Please leave developers alone and let them focus on important problems instead of wasting time gaming the system.