$ git clone -n https://gitee.com/opencloudos-stream/gtk-sharp2.git /var/lib/mock/dist-oc9-epol-build-113187-67891/root/chroot_tmpdir/scmroot/gtk-sharp2
Cloning into '/var/lib/mock/dist-oc9-epol-build-113187-67891/root/chroot_tmpdir/scmroot/gtk-sharp2'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/gtk-sharp2
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f1d2bf2 update