salt: [BUG] gitfs_remotes no longer work when upgrading from 3006.2 to 3006.3

Description When running 3006.2, remote pillars via gitfs works. When upgrading to 3006.3 with the same config, a critical error is displayed.

[ERROR   ] gitfs is configured but could not be loaded, are pygit2 and libgit2 installed?
[CRITICAL] No suitable gitfs provider module is installed.

Setup Using Docker image saltstack/salt:3006.3

master config contains:

fileserver_backend:
  - roots
  - git

gitfs_provider: pygit2
gitfs_base: main
gitfs_remotes:
  - https://github.com/mypublicrepo/salt-config.git

gitfs_global_lock: False

Please be as specific as possible and give set-up details.

• on-prem machine
• VM (Virtualbox, KVM, etc. please specify)
• VM running on a cloud service, please be explicit and add details
• container (Kubernetes, Docker, containerd, etc. please specify)
• or a combination, please be explicit
• jails if it is FreeBSD
• classic packaging
• onedir packaging
• used bootstrap to install

Steps to Reproduce the behavior docker-compose.yml

version: '3.7'

services:
  master:
    image: saltstack/salt:3006.3
    hostname: master
    command: salt-master -l info
    ports:
      - 4505:4505
      - 4506:4506
    environment:
      - PYTHONUNBUFFERED=true
    volumes:
      - ./etc/master:/etc/salt/master
      - ./salt:/srv/salt
      - ./pillar:/srv/pillar