$ git clone -n https://gitee.com/src-opencloudos-rpms/openjpeg2.git /var/lib/mock/dist-oc9-build-70960-47495/root/chroot_tmpdir/scmroot/openjpeg2
Cloning into '/var/lib/mock/dist-oc9-build-70960-47495/root/chroot_tmpdir/scmroot/openjpeg2'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/openjpeg2
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cd78e53 import openjpeg2-2.5.0-2.tl4