$ git clone -n https://gitee.com/src-opencloudos-rpms/replacer.git /var/lib/mock/dist-oc9-build-51512-14595/root/chroot_tmpdir/scmroot/replacer
Cloning into '/var/lib/mock/dist-oc9-build-51512-14595/root/chroot_tmpdir/scmroot/replacer'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/replacer
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 800ff87 import replacer-1.6-2.tl4