$ git clone -n http://git.inferitos.ru/rpms/libbs2b /var/lib/mock/inferit-8_9-extras-build-34377-66797/root/chroot_tmpdir/scmroot/libbs2b
Cloning into '/var/lib/mock/inferit-8_9-extras-build-34377-66797/root/chroot_tmpdir/scmroot/libbs2b'...
$ git fetch origin changed/i8ce/libbs2b-3.1.0-23.el8:KOJI_FETCH_HEAD
From http://git.inferitos.ru/rpms/libbs2b
 * [new tag]         changed/i8ce/libbs2b-3.1.0-23.el8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f5d6966 import libbs2b-3.1.0-23.el8