$ git clone -n https://gitee.com/opencloudos-stream/rust-nom.git /var/lib/mock/dist-oc9-epol-build-97887-60135/root/chroot_tmpdir/scmroot/rust-nom
Cloning into '/var/lib/mock/dist-oc9-epol-build-97887-60135/root/chroot_tmpdir/scmroot/rust-nom'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/rust-nom
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 921165a update