diff --git a/src/unix/posix.h b/src/unix/posix.h
index 8b4f427f7..35bd431b8 100644
--- a/src/unix/posix.h
+++ b/src/unix/posix.h
@@ -26,6 +26,7 @@ typedef int GIT_SOCKET;
 #define p_mkdir(p,m) mkdir(p, m)
 #define p_fsync(fd) fsync(fd)
 extern char *p_realpath(const char *, char *);
+#define p_utimensat(fd, path, times, flags) utimensat(fd, path, times, flags)
 
 #define p_recv(s,b,l,f) recv(s,b,l,f)
 #define p_send(s,b,l,f) send(s,b,l,f)
diff --git a/tests/checkout/crlf.c b/tests/checkout/crlf.c
index 381b04013..e0d94e79f 100644
--- a/tests/checkout/crlf.c
+++ b/tests/checkout/crlf.c
@@ -4,6 +4,7 @@
 
 #include "git2/checkout.h"
 #include "repository.h"
+#include "index.h"
 #include "posix.h"
 
 static git_repository *g_repo;
@@ -31,6 +32,25 @@ void test_checkout_crlf__detect_crlf_autocrlf_false(void)
 	check_file_contents("./crlf/all-crlf", ALL_CRLF_TEXT_RAW);
 }
 
+static void tick_index(git_index *index)
+{
+	git_time_t ts;
+	struct timespec times[2];
+
+	cl_assert(index->on_disk);
+	cl_assert(git_index_path(index));
+
+	cl_git_pass(git_index_read(index, true));
+	ts = index->stamp.mtime;
+
+	times[0].tv_sec  = UTIME_OMIT; /* dont' change the atime */
+	times[0].tv_nsec = UTIME_OMIT; /* dont' change the atime */
+	times[1].tv_sec  = ts + 1;
+	times[1].tv_nsec = 0;
+	cl_git_pass(p_utimensat(AT_FDCWD, git_index_path(index), times, 0));
+	cl_git_pass(git_index_read(index, true));
+}
+
 void test_checkout_crlf__autocrlf_false_index_size_is_unfiltered_size(void)
 {
 	git_index *index;
@@ -40,9 +60,10 @@ void test_checkout_crlf__autocrlf_false_index_size_is_unfiltered_size(void)
 
 	cl_repo_set_bool(g_repo, "core.autocrlf", false);
 
-	git_checkout_head(g_repo, &opts);
-
 	git_repository_index(&index, g_repo);
+	tick_index(index);
+
+	git_checkout_head(g_repo, &opts);
 
 	cl_assert((entry = git_index_get_bypath(index, "all-lf", 0)) != NULL);
 	cl_assert(entry->file_size == strlen(ALL_LF_TEXT_RAW));
@@ -140,9 +161,10 @@ void test_checkout_crlf__autocrlf_true_index_size_is_filtered_size(void)
 
 	cl_repo_set_bool(g_repo, "core.autocrlf", true);
 
-	git_checkout_head(g_repo, &opts);
-
 	git_repository_index(&index, g_repo);
+	tick_index(index);
+
+	git_checkout_head(g_repo, &opts);
 
 	cl_assert((entry = git_index_get_bypath(index, "all-lf", 0)) != NULL);