There are some Google-internal repos that use a custom scheme. Having
any remotes pointing to these URLs breaks git cl archive.

Change-Id: Ibd686c5cd11e090f0821ff2b412540138252dfce
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/1614946
Commit-Queue: Daniel Cheng <dcheng@chromium.org>
Auto-Submit: Daniel Cheng <dcheng@chromium.org>
Reviewed-by: Andrii Shyshkalov <tandrii@chromium.org>