$ git clone -n https://github.com/xcp-ng-rpms/sm.git /var/lib/mock/v8.3-incoming-10734-29278/root/chroot_tmpdir/scmroot/sm
Cloning into '/var/lib/mock/v8.3-incoming-10734-29278/root/chroot_tmpdir/scmroot/sm'...
$ git fetch origin 65e0a88769b1b34c2971f678c81fcbf85d81f5cf:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/sm
 * [new ref]         65e0a88769b1b34c2971f678c81fcbf85d81f5cf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 65e0a88 Update our patches on 3.2.12-17