$ git clone -n https://gitee.com/src-anolis-os/trousers.git /var/lib/mock/dist-an8.6-build-185270-60512/root/chroot_tmpdir/scmroot/trousers
Cloning into '/var/lib/mock/dist-an8.6-build-185270-60512/root/chroot_tmpdir/scmroot/trousers'...
$ git fetch origin c9568cc25a265972b85bb695c6470ea5bc7298c8:KOJI_FETCH_HEAD
From https://gitee.com/src-anolis-os/trousers
 * [new ref]         c9568cc25a265972b85bb695c6470ea5bc7298c8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c9568cc spec: add doc sub package