- With help of upstream, I finally found the released upstream

zip archive.

OBS-URL: https://build.opensuse.org/package/show/devel:languages:lua/lua-language-server?expand=0&rev=12

_service

@@ -6,8 +6,8 @@
         <param name="revision">2.5.6</param>
         <param name="version">2.5.6</param>
     </service>
-    <service name="tar" mode="buildtime" />
-    <service name="recompress" mode="buildtime">
+    <service name="tar" mode="disabled" />
+    <service name="recompress" mode="disabled">
         <param name="file">*.tar</param>
         <param name="compression">gz</param>
     </service>

lua-language-server.changes

@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Tue Dec 28 10:59:34 UTC 2021 - Matej Cepl <mcepl@suse.com>
+
+- With help of upstream, I finally found the released upstream
+  zip archive.
+
 -------------------------------------------------------------------
 Mon Dec 27 18:27:10 UTC 2021 - Matej Cepl <mcepl@suse.com>
 

lua-language-server.obsinfo

@@ -1,5 +0,0 @@
-name: lua-language-server
-version: 2.5.6
-mtime: 1640589988
-commit: 913b3b45af8c41c95515756602f8dc8ef46fe748
-

lua-language-server.spec

@@ -26,18 +26,20 @@ Summary:        Lua Language Server coded by Lua
 License:        MIT
 URL:            https://github.com/sumneko/lua-language-server
 # Checkout from git is required because of gh#sumneko/lua-language-server#878
-Source0:        %{name}-%{version}.tar.gz
+# Source0:        %%{name}-%%{version}.tar.gz
+Source0:        https://github.com/sumneko/%{pkg_name}/releases/download/%{version}/%{pkg_name}-%{version}-submodules.zip
 Source1:        lua-lsp-launcher.sh
 Source2:        README.suse-maint.md
 BuildRequires:  fdupes
 BuildRequires:  gcc-c++
 BuildRequires:  ninja
+BuildRequires:  unzip
 
 %description
 This package provides a Language Server Protocol (LSP) implementation for Lua.
 
 %prep
-%autosetup -p1
+%autosetup -p1 -c
 
 %build
 export CFLAGS="%{optflags}"