i know it is not recommended to make changes directly to already existing modules, but I made a quite simple miner change which I'm sure it won't affect the rest of the system. 

now the problem I'm facing is pushing those changes to production, I would be grateful if anyone can walk me through the steps of properly pushing changes into the GitHub from shell and the commands needed. 

for example, I followed the steps:

I made changes into survey, so I went into 

cd  src
cd  odoo
cd  addons
 

and after that tried pushing survey all together:

 git add survey
git push https HEAD:main

and here is where i get stuck and no updates happen and i have no idea how to fix this or to push the changes.