[static] fix damlDarLock checks

Signed-off-by: Itai Segall <[email protected]>

Author: isegall-da

build-tools/dar-lock-checker/src/main/scala/org/lfdecentralizedtrust/splice/build_tools/DarLockChecker.scala

@@ -85,7 +85,11 @@ object DarLockChecker {
   ): Unit = {
     val lastReleaseNumber = File("LATEST_RELEASE").contentAsString.strip
     val lastReleaseDarLock =
-      s"git show refs/remotes/origin/release-line-$lastReleaseNumber:daml/dars.lock".!!
+      Try(s"git show refs/remotes/origin/release-line-$lastReleaseNumber:daml/dars.lock".!!)
+        .getOrElse(
+          // When running in forks, origin might not have the release line, so we download the file explicitly from github
+          s"curl -sSLf https://raw.githubusercontent.com/hyperledger-labs/splice/release-line-$lastReleaseNumber/daml/dars.lock".!!
+        )
     val lastReleaseDars = parseDarsLock(lastReleaseDarLock)
     val mismatches = actual.flatMap { case (pkg, currentHash) =>
       lastReleaseDars