Futureproof the auto updater

Jenkinsfile

@@ -1,5 +1,8 @@
 pipeline {
     agent any
+    environment {
+        GITHUB_BRANCH = "${BRANCH_NAME}"
+    }
     options {
         buildDiscarder logRotator(artifactDaysToKeepStr: '', artifactNumToKeepStr: '', daysToKeepStr: '', numToKeepStr: '5')
     }

patches/server/0001-Build-changes.patch

@@ -5,7 +5,7 @@ Subject: [PATCH] Build changes
 
 
 diff --git a/build.gradle.kts b/build.gradle.kts
-index c236fe5dc388f8bc0a929f1de04af94c63514208..c7c8b00a34cbc39f1003b618097bc1e2858823a1 100644
+index c236fe5dc388f8bc0a929f1de04af94c63514208..722e2aefa279e02bfef23cda8d98210072b0ed3d 100644
 --- a/build.gradle.kts
 +++ b/build.gradle.kts
 @@ -13,8 +13,8 @@ plugins {
@@ -19,7 +19,18 @@ index c236fe5dc388f8bc0a929f1de04af94c63514208..c7c8b00a34cbc39f1003b618097bc1e2
      // Paper start
      implementation("org.jline:jline-terminal-jansi:3.21.0")
      implementation("net.minecrell:terminalconsoleappender:1.3.0")
-@@ -66,7 +66,7 @@ tasks.jar {
+@@ -62,11 +62,17 @@ tasks.jar {
+         val gitHash = git("rev-parse", "--short=7", "HEAD").getText().trim()
+         val implementationVersion = System.getenv("BUILD_NUMBER") ?: "\"$gitHash\""
+         val date = git("show", "-s", "--format=%ci", gitHash).getText().trim() // Paper
+-        val gitBranch = git("rev-parse", "--abbrev-ref", "HEAD").getText().trim() // Paper
++        var gitBranch: String;
++        if (System.getenv("JENKINS_URL") == null)
++        {
++            gitBranch = git("rev-parse", "--abbrev-ref", "HEAD").getText().trim() // Paper
++        } else {
++            gitBranch = System.getenv("GITHUB_BRANCH")
++        }
          attributes(
              "Main-Class" to "org.bukkit.craftbukkit.Main",
              "Implementation-Title" to "CraftBukkit",
@@ -28,7 +39,7 @@ index c236fe5dc388f8bc0a929f1de04af94c63514208..c7c8b00a34cbc39f1003b618097bc1e2
              "Implementation-Vendor" to date, // Paper
              "Specification-Title" to "Bukkit",
              "Specification-Version" to project.version,
-@@ -193,7 +193,7 @@ tasks.test {
+@@ -193,7 +199,7 @@ tasks.test {
  fun TaskContainer.registerRunTask(
      name: String, block: JavaExec.() -> Unit
  ): TaskProvider<JavaExec> = register<JavaExec>(name) {