Git commit选项用于拆分网络图中的分支

On my git network graph, I want to keep branches separated. However if I have a circumstance where I split my master to branch A, then make one or more commits to A, then merge it back to master, the graph shows a single line for both master and A, despite the fact that at least one commit point was not included.On my git network graph, I want to keep branche