$ git clone -n https://gitee.com/src-anolis-os/nss-pem.git /var/lib/mock/dist-an23.4-build-526224-78760/root/chroot_tmpdir/scmroot/nss-pem
Cloning into '/var/lib/mock/dist-an23.4-build-526224-78760/root/chroot_tmpdir/scmroot/nss-pem'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/src-anolis-os/nss-pem
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7eeb5ad update nss-pem.spec.