$ git clone -n https://gitee.com/src-opencloudos-rpms/squid.git /var/lib/mock/dist-oc9-build-227082-81141/root/chroot_tmpdir/scmroot/squid
Cloning into '/var/lib/mock/dist-oc9-build-227082-81141/root/chroot_tmpdir/scmroot/squid'...
$ git fetch origin d4c9b3606e6e602203376e2da788e9cd27810a67:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/squid
 * [new ref]         d4c9b3606e6e602203376e2da788e9cd27810a67 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d4c9b36 import squid-6.5-10.tl4