$ git clone -n https://gitee.com/doriscchao/nss.git /var/lib/mock/dist-oc9-build-52810-14653/root/chroot_tmpdir/scmroot/nss
Cloning into '/var/lib/mock/dist-oc9-build-52810-14653/root/chroot_tmpdir/scmroot/nss'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/doriscchao/nss
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5fe265e [nss-3.81-3.oc9.1] add test-libpkix-certs.tar.gz update nss libpkix tests certs to fix certificate expired error