In buildspec mode, ignore got_revision and just emit the primary repo as the revision
In buildspec mode, ignore got_revision and just emit the primary repo as the revision

To get rebuilds to work, got_revision has to be set to the buildspec repo.

BUG=406955

Review URL: https://codereview.chromium.org/504863002

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@291602 0039d316-1c4b-4281-b951-d872f2087c98

eunchong/build,eunchong/build,eunchong/build,eunchong/build