$ git clone -n https://github.com/xcp-ng-rpms/grub.git /var/lib/mock/v8.2-testing-3125-2656/root/chroot_tmpdir/scmroot/grub
Cloning into '/var/lib/mock/v8.2-testing-3125-2656/root/chroot_tmpdir/scmroot/grub'...
$ git reset --hard 6b5b9f2a1d31db0eb7627a659dd0e00255bc6143
Downloading SOURCES/grub-2.02.tar.gz (5.6 MB)
HEAD is now at 6b5b9f2 Copy grubx64.efi to EFI/BOOT/BOOTX64.EFI