$ git clone -n https://gitee.com/src-opencloudos-rpms/nss.git /var/lib/mock/dist-oc9-build-124888-74495/root/chroot_tmpdir/scmroot/nss
Cloning into '/var/lib/mock/dist-oc9-build-124888-74495/root/chroot_tmpdir/scmroot/nss'...
$ git fetch origin 3fce61fb0b9fefb6603d1e2f7ec21b6ca36f9df0:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/nss
 * [new ref]         3fce61fb0b9fefb6603d1e2f7ec21b6ca36f9df0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3fce61f import nss-3.105-2.tl4