Add comment to master manifest

Add comment reminding us to pin cos/repohooks to refs/heads/master
whenever we create a new release branch.

BUG=None
TEST=None

Change-Id: I801c25a853cf67df450ddb7aa7ce192dd6106b1f
1 file changed
tree: 1892d697e351fb2f3ef48afce8da05d85cb5ae58
  1. LICENSE
  2. PRESUBMIT.cfg
  3. README.md
  4. external_full.xml
  5. flaky_repos.xml
README.md

Manifests used to checkout COS source

Usage: repo init -u https://cos.googlesource.com/cos/manifest.git && repo sync.