When the repo is checked out as a nested worktree, a go.work in the
outer tree hijacks module resolution, which makes the rebuild fails
with "main module does not contain package." Set GOWORK=off for the
build since the hook is self-contained.
Bumps HOOK_VERSION so existing installs pick up the fix.
Updates #cleanup
Change-Id: Ibd14849efc26e4e1893c5b8e300caa71573f54bd
Signed-off-by: Fernando Serboncini <fserb@fserb.com.br>
Pull the hook logic into a reusable githook library package so
tailscale/corp can share it via a thin wrapper main instead of
keeping a forked copy in sync.
The install flow also changes: a wrapper scripts now build the
binary and reinstall the git hooks. Pulling new shared code no
longer requires re-running the installer.
Updates tailscale/corp#39860
Change-Id: I4d606d11c8c883015c190c54e3387a7f9fe4dd32
Signed-off-by: Fernando Serboncini <fserb@tailscale.com>