passing tests

Author: ItsMeSamey

.gitmodules

@@ -1,12 +1,16 @@
 [submodule "dep/libc-test"]
 	path = dep/libc-test
 	url = https://github.com/kraj/libc-test
+	shallow = true
 [submodule "dep/tiny-regex-c"]
 	path = dep/tiny-regex-c
 	url = https://github.com/marler8997/tiny-regex-c
+	shallow = true
 [submodule "dep/open_posix_testsuite"]
 	path = dep/open_posix_testsuite
 	url = https://github.com/nloopa/open_posix_testsuite
+	shallow = true
 [submodule "dep/glibc-testsuite"]
 	path = dep/glibc-testsuite
 	url = https://github.com/cloudius-systems/glibc-testsuite
+	shallow = true

build.zig

@@ -740,7 +740,17 @@ fn ensureRepoPath(b: *std.Build, rel_path: []const u8, probe_rel_path: []const u
 
     var exit_code: u8 = undefined;
     _ = b.runAllowFail(
-        &.{ "git", "submodule", "update", "--init", "--recursive", "--", rel_path },
+        &.{
+            "git",
+            "submodule",
+            "update",
+            "--init",
+            "--depth",
+            "1",
+            "--recommend-shallow",
+            "--",
+            rel_path,
+        },
         &exit_code,
         .inherit,
     ) catch return null;