$ git clone -n https://gitee.com/opencloudos-stream/isa-l.git /var/lib/mock/dist-oc9-epol-build-82529-57112/root/chroot_tmpdir/scmroot/isa-l
Cloning into '/var/lib/mock/dist-oc9-epol-build-82529-57112/root/chroot_tmpdir/scmroot/isa-l'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/isa-l
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 01aa529 package init