main: use git-deborig (#37)

main.js

@@ -103,22 +103,6 @@ async function main() {
         ])
         core.endGroup()
 
-        if (revision) {
-            core.startGroup("Create tarball")
-            await exec.exec("docker", [
-                "exec",
-                container,
-                "tar",
-                "--exclude-vcs",
-                "--exclude", "./debian",
-                "--transform", `s/^\./${pkg}-${version}/S`,
-                "-cvzf", `${buildDirectory}/${pkg}_${version}.orig.tar.gz`,
-                "-C", sourceDirectory,
-                "./"
-            ])
-            core.endGroup()
-        }
-
         core.startGroup("Update packages list")
         await exec.exec("docker", [
             "exec",
@@ -145,6 +129,17 @@ async function main() {
             core.endGroup()
         }
 
+        if (revision) {
+            core.startGroup("Create tarball")
+            await exec.exec("docker", [
+                "exec",
+                container,
+                "git-deborig",
+                "HEAD"
+            ])
+            core.endGroup()
+        }
+
         core.startGroup("Build packages")
         await exec.exec("docker", [
             "exec",