How to do go enrichment under a parent GO term and its child GO term

Question

[Scabbards]

Hi, everyone I want to get the enrichment of specific GO term and its child GO terms.

Based on my first enrichment analysis through clusterProfiler, I find "GO:0044242" has remarkable enrichment. In this case, I want to know its child terms's enrichment condition.

However, through enrichGO() I can and can only get the enrichment of a large amount of GO terms at a parent level.

What I can do if I want to get the child terms(GO:0044237, GO:0009987...) of GO:0044242 and do GO enrichment analysis based on them?