[verse]
'git merge' [-n] [--stat] [--no-commit] [--squash] [--[no-]edit]
[-s <strategy>] [-X <strategy-option>] [-S[<keyid>]]
+ [--[no-]allow-unrelated-histories]
[--[no-]rerere-autoupdate] [-m <msg>] [<commit>...]
'git merge' <msg> HEAD <commit>...
'git merge' --abort