fix(setup): handle multiple remote ref matches

[ml019]

Intent of Change

• Bug fix (non-breaking change which fixes an issue)

Description

When querying whether a remote repo contains the desired reference, it is possible for more than one match to be returned. In this case, use the first match.

Motivation and Context

• avoid errors being thrown
• ensure the plugin state if fully populated

How Has This Been Tested?

Local testing

Related Changes

Prerequisite PRs:

• None

Dependent PRs:

• None

Consumer Actions:

• None