Patch for gtk3 package .gir file

gtk_patch.pxsl

#!/usr/local/bin/#pxsl
stylesheet -version=1.0 -xmlns:xsl=http://www.w3.org/1999/XSL/Transform
  output -indent=yes
 
  template -match=<<*[@name = 'get_row_header_cells' or @name = 'get_column_header_cells']>>

  template @*|node()
    copy
      apply-templates @*|node()

gtk_patch.xslt

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:output indent="yes"/>

  <xsl:template match="*[@name = 'get_row_header_cells' or @name = 'get_column_header_cells']"/>

  <xsl:template match="@*|node()">
    <xsl:copy>
      <xsl:apply-templates select="@*|node()"/>
    </xsl:copy>
  </xsl:template>
</xsl:stylesheet>

It just says to delete every element with a name="get_row_header_cells" or aname="get_column_header_cells" attribute - you could do that with a text editor instead if you like.