diff -rauN libgit2-0.27.7/tests/buf/oom.c libgit2-0.27.7-disable-oom-tests-on-32bit-patch/tests/buf/oom.c
--- libgit2-0.27.7/tests/buf/oom.c	2018-10-26 15:27:21.000000000 +0200
+++ libgit2-0.27.7-disable-oom-tests-on-32bit-patch/tests/buf/oom.c	2018-11-09 15:17:30.475788525 +0100
@@ -32,6 +32,7 @@
  */
 void test_buf_oom__grow(void)
 {
+#if defined(GIT_ARCH_64)
 	git_buf buf = GIT_BUF_INIT;
 
 	git_buf_clear(&buf);
@@ -40,6 +41,9 @@
 	cl_assert(git_buf_oom(&buf));
 
 	git_buf_free(&buf);
+#else
+	cl_skip();
+#endif
 }
 
 void test_buf_oom__grow_by(void)