$ git clone -n https://gitee.com/sys0613/libdvdread.git /var/lib/mock/dist-an7_9-updates-build-309020-65941/root/chroot_tmpdir/scmroot/libdvdread
Cloning into '/var/lib/mock/dist-an7_9-updates-build-309020-65941/root/chroot_tmpdir/scmroot/libdvdread'...
$ git fetch origin 4fc948e51e196717d59fe2dfd78b3cf2c62c446c:KOJI_FETCH_HEAD
From https://gitee.com/sys0613/libdvdread
 * [new ref]         4fc948e51e196717d59fe2dfd78b3cf2c62c446c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4fc948e Add doc sub package