orm-label [nzSpan]="6" nzFor="sourceRef">Source ref</nz-form-label>
    <nz-form-control [nzSpan]="14">
      <app-repository-ref-select [branches]="sourceBranches" [tags]="sourceTags" formControlName="sourceRef"
        placeHolder="Select a ref" id="sourceRef"></app-repository-ref-select>
    </nz-form-control>
  </nz-form-item>
  <nz-form-item *ngIf="!event">
    <nz-form-control [nzSpan]="12" [nzOffset]="6">
      <button nz-button nzType="primary" [disabled]="!validateForm.valid" [nzLoading]="isLoading