[all-commits] [llvm/llvm-project] 8e53ab: [ci] pull main branch before diffing (#68983)

[Mikhail Goncharov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 8e53abc0412ff9d4f2be15fdc24b7d8e377d1b62
      https://github.com/llvm/llvm-project/commit/8e53abc0412ff9d4f2be15fdc24b7d8e377d1b62
  Author: Mikhail Goncharov <goncharov.mikhail at gmail.com>
  Date:   2023-10-16 (Mon, 16 Oct 2023)

  Changed paths:
    M .ci/generate-buildkite-pipeline-premerge

  Log Message:
  -----------
  [ci] pull main branch before diffing (#68983)

we tried to generate a full diff against main in
ec9d80e but it resulted in wrong diffs.

It seems that the issue was that 'main' was not
updated after agent restart and diff main...HEAD kept growing.

Not enabling diff main...HEAD just yet and will check logs for new PRs
first.