$ git clone -n http://git.inferitos.ru/rpms/rear /var/lib/mock/inferit-8_10-bootstrap-build-37966-75799/root/chroot_tmpdir/scmroot/rear
Cloning into '/var/lib/mock/inferit-8_10-bootstrap-build-37966-75799/root/chroot_tmpdir/scmroot/rear'...
$ git fetch origin changed/i8c-beta/rear-2.6-12.el8:KOJI_FETCH_HEAD
From http://git.inferitos.ru/rpms/rear
 * [new tag]         changed/i8c-beta/rear-2.6-12.el8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f84803d import rear-2.6-12.el8