Ubuntu SSH Server File Recovery

I accidentally lost multiple media and document files while working on my Ubuntu SSH server. I mistakenly ran the 'git checkout .' command, and have no backups of the lost files. I am looking for a professional to help me with both file recovery and reverting the 'git checkout .' command. The files are not stored in the Github respository only on the local server.

Ideal Skills:
- Strong experience in Ubuntu SSH server management
- Proficiency in Git and file recovery
- Knowledge of media and document file formats

Your main tasks include:
- Recovering the lost media files (images, videos) and document files (PDFs, Word documents)
- Assisting me in reverting the 'git checkout .' command to its previous state
- Advising me on best practices to avoid similar incidents in the future

I am looking for someone who can start on this immediately and has a proven track record in similar recovery and server management projects.