internal/pkg: ignore typeflag 'g'

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/pkg/tar.go

@@ -199,6 +199,10 @@ func (a *tarArtifact) Pathname() (*check.Absolute, error) {
 					}
 					break
 
+				case tar.TypeXGlobalHeader:
+					// ignore
+					break
+
 				default:
 					return DisallowedTypeflagError(typeflag)
 				}