$ git clone -n https://gitee.com/src-opencloudos-rpms/nss /var/lib/mock/dist-oc8-build-57147-15341/root/chroot_tmpdir/scmroot/nss
Cloning into '/var/lib/mock/dist-oc8-build-57147-15341/root/chroot_tmpdir/scmroot/nss'...
$ git fetch origin oc8:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/nss
 * [new branch]      oc8        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cabedc9 import nss-3.90.0-3.tl3