$ git clone -n https://gitee.com/src-opencloudos-rpms/libgexiv2.git /var/lib/mock/dist-oc9-build-128143-77173/root/chroot_tmpdir/scmroot/libgexiv2
Cloning into '/var/lib/mock/dist-oc9-build-128143-77173/root/chroot_tmpdir/scmroot/libgexiv2'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/libgexiv2
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a70ec3d import libgexiv2-0.14.2-6.tl4