$ git clone -n http://git.inferitos.ru/rpms/boost /var/lib/mock/inferit-8_8-build-12852-22692/root/chroot_tmpdir/scmroot/boost
Cloning into '/var/lib/mock/inferit-8_8-build-12852-22692/root/chroot_tmpdir/scmroot/boost'...
$ git fetch origin changed/i8c/boost-1.66.0-13.el8:KOJI_FETCH_HEAD
From http://git.inferitos.ru/rpms/boost
 * [new tag]         changed/i8c/boost-1.66.0-13.el8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e990659 edit changelog for import boost-1.66.0-13.el8