$ git clone -n https://gitee.com/src-opencloudos-rpms/nss.git /var/lib/mock/dist-oc8-build-67532-46182/root/chroot_tmpdir/scmroot/nss
Cloning into '/var/lib/mock/dist-oc8-build-67532-46182/root/chroot_tmpdir/scmroot/nss'...
$ git fetch origin a6e6f4ffb7754eb8d6edbdcfaa560ccf43860e96:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/nss
 * [new ref]         a6e6f4ffb7754eb8d6edbdcfaa560ccf43860e96 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a6e6f4f import nss-3.90.0-6.tl3