Git operations fail after global lib is loaded

We have a single global library defined loaded from github. When we're running longer-running builds, we set the status of the commit using the GitHubCommitStatusSetter step:

step([$class: 'GitHubCommitStatusSetter', statusResultSource: [$class: 'ConditionalStatusResultSource', results: []]])

Say the library is called LIB and the project we're building (also on github) is APP, when the above step is executed it tries to set the commit status with the commit-hash from APP on the repository LIB, which then fails because the LIB doesn't have this commit hash.

 org.jenkinsci.plugins.github.common.CombineErrorHandler$ErrorHandlingException: java.io.FileNotFoundException: {"message":"No commit found for SHA: 172fd52d6393fae44ee1d962dc26098846489e1e","documentation_url":"https://developer.github.com/v3/repos/statuses/"}

I think I can around this by explicitly specifying the repository in the GitHubCommitStatusSetter but ideally that shouldn't be necessary.