PostCommitStatus.groovy

def postCommitStatus(params = [:]) {
  withCredentials([
    string([credentialsId: 'your-credentials-id', variable: 'GITHUB_API_TOKEN'])
  ]) {
    def authHeaders = [[name: 'Authorization', value: "token ${GITHUB_API_TOKEN}"]]
    def commit = params.commit
    def requestBody = params.body
    def statusUrl = "https://api.github.com/repos/repo-owner/repo-name/statuses/${commit}"
    try {
      def response = httpRequest acceptType: 'APPLICATION_JSON', contentType: 'APPLICATION_JSON', httpMode: 'POST', requestBody: requestBody, url: statusUrl, customHeaders: authHeaders
    } catch(e) {
      throw e
    }
  }
}