$ git clone -n https://gitee.com/src-opencloudos-rpms/squid.git /var/lib/mock/dist-oc9-build-59886-16463/root/chroot_tmpdir/scmroot/squid
Cloning into '/var/lib/mock/dist-oc9-build-59886-16463/root/chroot_tmpdir/scmroot/squid'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/squid
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6f3f8e7 import squid-6.5-1.tl4