[clang] Use the llvm-project mirror on git-on-borg

Bug: 1350420
Change-Id: I9eb73af6454d9ecdd0af7b68af9b652d61a0a54a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3810420
Commit-Queue: Nico Weber <thakis@chromium.org>
Auto-Submit: Hans Wennborg <hans@chromium.org>
Reviewed-by: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1031877}
NOKEYCHECK=True
GitOrigin-RevId: 886d6e1e008e0cdf04f34487a6c95729e88902c8
1 file changed