commands/git: fix imports

Dependencies

• [2] L4JXJHWX pijul/*: reorganize imports and remove extern crate
• [*] SXEYMYF7 Fixing the bad changes in history (unfortunately, by rebooting).

Change contents

• edit in pijul/src/commands/git.rs at line 6
  [2.2237]

  [2.2237]
  + use clap::Clap;
• edit in pijul/src/commands/git.rs at line 9
  [2.2281]

  [2.2281]
  + use log::{debug, error, info, trace};

  + use thiserror::Error;