Delete a branch from the pristine
pijul prune [-h | --help] [-V | --version] [--repository <repository>] <branch>
Delete a branch from the pristine. This can only be done if there is at least one other branch (i.e. if there are at least two branches before running this command).
If the pristine has two branches, "master" and "unstable":
pijul prune unstable
Print a help message and exit.
Print the version of Pijul and exit.
Don't run this command in the current directory, run it in <repository> instead.
The name of the branch to be deleted.