On Wed, Apr 26, 2017 at 05:08:39PM -0700, Junio C Hamano wrote:

We already do so for --window=<n> and --depth=<n>; this will help
when the user wants to force --threads=1 for reproducible testing
without getting affected by racing multiple threads.

Seems reasonable. I usually just do this with:

  git -c pack.threads=1 repack ...

but it does not hurt to have a real command line option.

---
 Documentation/git-repack.txt | 5 ++++-
 builtin/repack.c             | 5 +++++
 2 files changed, 9 insertions(+), 1 deletion(-)

The patch itself looks obviously correct.

-Peff