sqitch checkout without params fails

[francois]

$ sqitch checkout
Use of uninitialized value $branch in string eq at /usr/local/Cellar/sqitch/v1.1.0/bin/../lib/perl5/App/Sqitch/Command/checkout.pm line 61.
Use of uninitialized value $branch in concatenation (.) or string at /usr/local/Cellar/sqitch/v1.1.0/bin/../lib/perl5/App/Sqitch/Command/checkout.pm line 74.
Last change before the branches diverged: genesis/salesforce @genesis
No changes deployed since: "e876a702f2310d550e39864ddc058e1007e37250"
fatal: empty string is not a valid pathspec. please use . instead if you meant to match all paths
"git" unexpectedly returned exit value 128

At least, it didn't cause any changes in the repository.

[theory]

Thanks for the report!