Currently, the tool-cache's getManifestFromRepo defaults to the master branch if no branch is specified. Not every repo uses that as the default branch, we should try defaulting to the default branch, or just make users have to specify which branch to use.
Currently, the tool-cache's getManifestFromRepo defaults to the
masterbranch if no branch is specified. Not every repo uses that as the default branch, we should try defaulting to the default branch, or just make users have to specify which branch to use.