Accept cases when the origin in --patch-ref ends in .git but the URL in
.gclient or DEPS doesn't.

R=agable@chromium.org

Bug: 643346
Change-Id: I25e6fd8400b09c7e249578cfbd7e9485bab9ea85
Reviewed-on: https://chromium-review.googlesource.com/1030893
Commit-Queue: Edward Lesmes <ehmaldonado@chromium.org>
Reviewed-by: Aaron Gable <agable@chromium.org>