This is a simple use-case for git repository.

testuser1 72406fcc89 Merge branch 'bob' 3 months ago
a 67e795cd02 New revision. 3 months ago
alice.txt 3003fc7067 Add branch doc. 3 months ago
bob.txt 72406fcc89 Merge branch 'bob' 3 months ago
main.sh 835d5cd690 Add shebang. 3 months ago