commit 8a08e7823cb677fb6e102da99c971c97b756e2de
Author: Richard C. Gobeille <richard@voidpoint.com>
Date:   Fri Jun 5 11:55:21 2020 -0700

    engine: fix rev.cpp so it works properly outside of builds on Windows

commit 15f5d0223169519d341cf9739d06a64ce5268962
Author: Richard C. Gobeille <richard@voidpoint.com>
Date:   Fri Jun 5 10:19:16 2020 -0700

    Makefile: use HEAD instead of origin for generating VC_HASH

See https://voidpoint.io/terminx/eduke32 for more details.