Clone a specific tag


I am new in Git. I am trying to use a specific tag of a repository.
I did use this command: git clone --branch --single-branch

When i check with this command, i can confirm that I am in the correct tag
git describe --tags

But… the master of this reposity have some different config file (newer one with a different name)… my local folder does not contain the config file with the old name that I was expecting… Do you know why… did i miss anything?