I have no idea what's doing this:

[dsansome@dsansome-z840 (thread-pool-metrics) ~/cr/i/build] git cl presubmit
...
[dsansome@dsansome-z840 (thread-pool-metrics) ~/cr/i/build] ls -la | head -n 2
total 428
drwxr-x---  4 dsansome eng   4096 Apr  7 11:37 -
[dsansome@dsansome-z840 (thread-pool-metrics) ~/cr/i/build] ls -la ./-
total 348
drwxr-x---  4 dsansome eng   4096 Apr  7 11:37 .
drwxr-x--- 14 dsansome eng 339968 Apr  7 11:37 ..
drwxr-x--- 15 dsansome eng   4096 Apr  7 11:37 depot_tools
drwxr-x--- 12 dsansome eng   4096 Apr  7 11:37 recipe_engine

It's annoying because it causes a later "git cl upload" to fail because it gets passed "-" as a commandline argument:

pylint.py: error: no such option: -/