Fix build errors caused by sanakirja 0.14

Dependencies

• [2] SXEYMYF7 Fixing the bad changes in history (unfortunately, by rebooting).
• [3] CVAT6LN3 Fixing git import, and adding more useful feedback (with `RUST_LOG="pijul=info"`)

Change contents

• replacement in pijul/src/commands/git.rs at line 83
  [2.139643]→[2.139643:139683](∅→∅)
  − env_git: &mut ::sanakirja::Env,
  [2.139643]

  [2.139683]
  + env_git: &mut ::sanakirja::Env<::sanakirja::Exclusive>,
• replacement in pijul/src/commands/git.rs at line 220
  [2.143869]→[2.143869:143905](∅→∅)
  − env_git: &mut ::sanakirja::Env,
  [2.143869]

  [2.143905]
  + env_git: &mut ::sanakirja::Env<::sanakirja::Exclusive>,
• replacement in pijul/src/commands/git.rs at line 322
  [2.147614]→[2.147614:147646](∅→∅)
  − git: &mut ::sanakirja::Env,
  [2.147614]

  [2.147646]
  + git: &mut ::sanakirja::Env<::sanakirja::Exclusive>,