* Ignore changes on non-main branches
* Increase the timeout for git cloning the repo
* Improve the error message on git error
Change-Id: I22af2b8042c14c3c413f52d65dc5b89b7f5c3f11
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/132820
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>