$ git clone -n http://git.inferitos.ru/rpms/samba /var/lib/mock/inferit-8_8-bootstrap-build-28609-48386/root/chroot_tmpdir/scmroot/samba
Cloning into '/var/lib/mock/inferit-8_8-bootstrap-build-28609-48386/root/chroot_tmpdir/scmroot/samba'...
$ git fetch origin changed/i8c/samba-4.18.6-1.el8:KOJI_FETCH_HEAD
From http://git.inferitos.ru/rpms/samba
 * [new tag]         changed/i8c/samba-4.18.6-1.el8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7b7cd40 import samba-4.18.6-1.el8