$ git clone -n http://git.inferitos.ru/rpms/libmatroska /var/lib/mock/inferit-8_9-extras-build-34534-68439/root/chroot_tmpdir/scmroot/libmatroska
Cloning into '/var/lib/mock/inferit-8_9-extras-build-34534-68439/root/chroot_tmpdir/scmroot/libmatroska'...
$ git fetch origin changed/i8e/libmatroska-1.5.0-1.el8.inferit:KOJI_FETCH_HEAD
From http://git.inferitos.ru/rpms/libmatroska
 * [new tag]         changed/i8e/libmatroska-1.5.0-1.el8.inferit -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6d3d8cb Fix build problem