Old way:
- ls-remote $ref $ref^{} and parse
- compare to current
- if changed, fetch
- update worktree
New way:
- fetch $ref
- compare to current
- if change, update worktree
This ensures we do not miss events. E.g.
before:
t0: hash changes to X
t1: send webhook(X), waiting for response
t2: hash changes to Y
t3: queue next webhook(Y) but can't send because previous is not done
t4: crash
t5: restart
t6: find repo at hash Y
no webhook(Y) was sent.
after:
t0: hash changes to X
t1: send webhook(X), waiting for response
t2: hash changes to Y
t3: queue next webhook(Y) but can't send because previous is not done
t4: crash
t5: restart
t6: find repo at hash Y
t7: send webhook(Y), waiting for response
This is a breaking change. The `--change-permissions` flag was too
coarse (e.g. changed directories and files alike) and not expressive (no
way to say "g+w").
I doubt if anyone was using it, and if they were, the new
`--group-write` is almost certainly what they want.
Tim Hockin