$ git clone -n https://gitee.com/zhuzhustu/nss-pem.git /var/lib/mock/dist-an23-build-525515-78383/root/chroot_tmpdir/scmroot/nss-pem
Cloning into '/var/lib/mock/dist-an23-build-525515-78383/root/chroot_tmpdir/scmroot/nss-pem'...
$ git fetch origin 7eeb5ad927935fcb90a878626cfefd8c14db96ae:KOJI_FETCH_HEAD
From https://gitee.com/zhuzhustu/nss-pem
 * [new ref]         7eeb5ad927935fcb90a878626cfefd8c14db96ae -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7eeb5ad update nss-pem.spec.