$ git clone -n http://git.inferitos.ru/rpms/grub2 /var/lib/mock/inferit-8_10-bootstrap-build-37554-75799/root/chroot_tmpdir/scmroot/grub2
Cloning into '/var/lib/mock/inferit-8_10-bootstrap-build-37554-75799/root/chroot_tmpdir/scmroot/grub2'...
$ git fetch origin changed/i8c-beta/grub2-2.02-156.el8:KOJI_FETCH_HEAD
From http://git.inferitos.ru/rpms/grub2
 * [new tag]         changed/i8c-beta/grub2-2.02-156.el8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 82ddce2 import grub2-2.02-156.el8