$ git clone -n https://gitee.com/src-opencloudos-rpms/isomd5sum.git /var/lib/mock/dist-oc9-build-63019-16463/root/chroot_tmpdir/scmroot/isomd5sum
Cloning into '/var/lib/mock/dist-oc9-build-63019-16463/root/chroot_tmpdir/scmroot/isomd5sum'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/isomd5sum
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7921f35 import isomd5sum-1.2.3-5.tl4