patch-git: Add auto-generated/ prefix to Source: files

This suppresses a centpkg pre-push-check failure.

Resolves: RHEL-121748

patch-git.lua

@@ -576,12 +576,18 @@ local function emit_sources()
          max = tointeger(k)
       end
    end
+
+   -- The centpkg pre-push-check recognizes this prefix on Source
+   -- files and does not fail if these sources are neither committed
+   -- to the Git repository nor listed in the sources file.
+   local auto_generated = 'auto-generated/'
+
    local function emit(name)
       max = max + 1
       print('Source' .. max .. ': ' .. name .. '\n')
    end
-   emit(git_commit_file)
-   emit(git_log_file)
+   emit(auto_generated .. git_commit_file)
+   emit(auto_generated .. git_log_file)
    emit('patch-git.lua') -- This file.
 end