$ git clone -n http://git.inferitos.ru/rpms/frr /var/lib/mock/inferit-8_9-updates-build-34901-70117/root/chroot_tmpdir/scmroot/frr
Cloning into '/var/lib/mock/inferit-8_9-updates-build-34901-70117/root/chroot_tmpdir/scmroot/frr'...
$ git fetch origin changed/i8c/frr-7.5.1-13.el8_9.3:KOJI_FETCH_HEAD
From http://git.inferitos.ru/rpms/frr
 * [new tag]         changed/i8c/frr-7.5.1-13.el8_9.3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at eeb5f2a import frr-7.5.1-13.el8_9.3