When the current code needs the repo checked out to a specific commit it
calls clone_repo. The clone_repo call makes sure the repo has been
cloned locally, performs a fetch to get all tags and prunes any
references no longer on the remote, then finally checks out the
requested ref.
The validation logic starts with cloning all necessary repos and
performing these actions, so after that point, we should be able to just
checkout the ref that we need for the given check. This will greatly
improve the execution time of the validate job for repos that have had a
large number of releases.
Change-Id: Ie444c8ef8e91832c38ee69307382ddb5fb8e1b08
Signed-off-by: Sean McGinnis <sean.mcginnis@gmail.com>
bb81a80fd0