thodg/libgit2

diff --git a/tests/clone/local.c b/tests/clone/local.c
index fec3be5..f14b33c 100644
--- a/tests/clone/local.c
+++ b/tests/clone/local.c
@@ -26,7 +26,7 @@ static int git_style_unc_path(git_buf *buf, const char *host, const char *path)
 	if (path[0] == '/')
 		path++;
 
-	if (isalpha(path[0]) && path[1] == ':' && path[2] == '/') {
+	if (git__isalpha(path[0]) && path[1] == ':' && path[2] == '/') {
 		git_buf_printf(buf, "%c$/", path[0]);
 		path += 3;
 	}