$ git clone -n https://gitee.com/src-opencloudos-rpms/epol-release.git /var/lib/mock/dist-oc9-build-229874-81404/root/chroot_tmpdir/scmroot/epol-release
Cloning into '/var/lib/mock/dist-oc9-build-229874-81404/root/chroot_tmpdir/scmroot/epol-release'...
$ git fetch origin 6cea04f1dcba05b0b2e3feba10b6e016e81c9eda:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/epol-release
 * [new ref]         6cea04f1dcba05b0b2e3feba10b6e016e81c9eda -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6cea04f import epol-release-9-8.tl4