<form nz-form [formGroup]="validateForm" (ngSubmit)="submitForm()">
  <nz-form-item>
    <nz-form-label [nzSpan]="6" nzFor="repository">Repository</nz-form-label>
    <nz-form-control [nzSpan]="14">
      <nz-select nzShowSearch nzAllowClear nzPlaceHolder="Select a repository" formControlName="repository"
        id="repository" (ngModelChange)="repositoryChange($event)">
        <ng-container *ngFor="let entry of repositories | keyvalue">
          <nz-option *ngFor="let repo of entry.value" [nzLabel]="ent