$ git clone -n https://gitee.com/src-opencloudos-rpms/nss.git /var/lib/mock/dist-oc8-build-75166-52105/root/chroot_tmpdir/scmroot/nss
Cloning into '/var/lib/mock/dist-oc8-build-75166-52105/root/chroot_tmpdir/scmroot/nss'...
$ git fetch origin 45d4b536e990cf0b80a9e2af05738f8e45f80042:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/nss
 * [new ref]         45d4b536e990cf0b80a9e2af05738f8e45f80042 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 45d4b53 import nss-3.90.0-7.tl3