$ git clone -n http://git.inferitos.ru/rpms/bcmatroska2 /var/lib/mock/inferit-9_4-extras-build-55893-126328/root/chroot_tmpdir/scmroot/bcmatroska2
Cloning into '/var/lib/mock/inferit-9_4-extras-build-55893-126328/root/chroot_tmpdir/scmroot/bcmatroska2'...
$ git fetch origin changed/i9m/bcmatroska2-5.3.84-1.el9.inferit:KOJI_FETCH_HEAD
From http://git.inferitos.ru/rpms/bcmatroska2
 * [new tag]         changed/i9m/bcmatroska2-5.3.84-1.el9.inferit -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 90f6cd3 Update to 5.3.84