Update git command to work with git 2.22.0 (#730)
Update git command to work with git 2.22.0 (#730)

* Update git command to work with git 2.22.0

Fixes https://github.com/bazelbuild/continuous-integration/issues/727

bazelbuild/continuous-integration,bazelbuild/continuous-integration,bazelbuild/continuous-integration,bazelbuild/continuous-integration,bazelbuild/continuous-integration,bazelbuild/continuous-integration,bazelbuild/continuous-integration,bazelbuild/continuous-integration