$ git clone -n https://gitee.com/src-opencloudos-rpms/libpst.git /var/lib/mock/dist-oc9-build-42476-14591/root/chroot_tmpdir/scmroot/libpst
Cloning into '/var/lib/mock/dist-oc9-build-42476-14591/root/chroot_tmpdir/scmroot/libpst'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/libpst
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a1ef7a0 import libpst-0.6.76-3.tl4