$ git clone -n http://git.inferitos.ru/rpms/opa-ff /var/lib/mock/inferit-8_8-bootstrap-build-28375-47887/root/chroot_tmpdir/scmroot/opa-ff
Cloning into '/var/lib/mock/inferit-8_8-bootstrap-build-28375-47887/root/chroot_tmpdir/scmroot/opa-ff'...
$ git fetch origin changed/i8c/opa-ff-10.12.1.0.6-1.el8.1:KOJI_FETCH_HEAD
From http://git.inferitos.ru/rpms/opa-ff
 * [new tag]         changed/i8c/opa-ff-10.12.1.0.6-1.el8.1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 07e86a4 import opa-ff-10.12.1.0.6-1.el8.1