git psykorebase --help fails because there is no man page for it.

[Natim]

--help doesn't works:

$ git psykorebase --help
Aucune entrée de manuel pour git-psykorebase
voir « man 7 undocumented » pour obtenir de l'aide quand les pages de manuel ne sont pas disponibles.

Also -h works:

$ git psykorebase -h
usage: git-psykorebase [-h] [--no-ff] [--continue] [--ask]
                       [PRIMARY-BRANCH] [SECONDARY-BRANCH]

Perform safe merged-based rebases.

positional arguments:
  PRIMARY-BRANCH    Branch you want to apply changes on top of.
  SECONDARY-BRANCH  Branch with changes you want to rebase.

optional arguments:
  -h, --help        show this help message and exit
  --no-ff           Force a commit message for the psykorebase.
  --continue        Continue the rebase after a merge conflict.
  --ask             Ask confirmation before each command.

[Natim]

We can take the one generated here: https://github.com/tj/git-extras/pull/411/files#diff-b9b53eb7c4da7dbbce43e3e525cf93f7