$ git clone -n http://git.inferitos.ru/rpms/libmpeg2 /var/lib/mock/inferit-8_9-extras-build-34393-67009/root/chroot_tmpdir/scmroot/libmpeg2
Cloning into '/var/lib/mock/inferit-8_9-extras-build-34393-67009/root/chroot_tmpdir/scmroot/libmpeg2'...
$ git fetch origin changed/i8ce/libmpeg2-0.5.1-18.el8:KOJI_FETCH_HEAD
From http://git.inferitos.ru/rpms/libmpeg2
 * [new tag]         changed/i8ce/libmpeg2-0.5.1-18.el8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2b0398d import libmpeg2-0.5.1-18.el8