-'git subtree' add -P <prefix>|--prefix=<prefix> <commit>
-'git subtree' pull -P <prefix>|--prefix=<prefix> <repository> <refspec...>
-'git subtree' push -P <prefix>|--prefix=<prefix> <repository> <refspec...>
-'git subtree' merge -P <prefix>|--prefix=<prefix> <commit>
-'git subtree' split -P <prefix>|--prefix=<prefix> [OPTIONS] [<commit>]
+'git subtree' add -P <prefix> <commit>
+'git subtree' pull -P <prefix> <repository> <refspec...>
+'git subtree' push -P <prefix> <repository> <refspec...>
+'git subtree' merge -P <prefix> <commit>
+'git subtree' split -P <prefix> [OPTIONS] [<commit>]