$ git clone -n https://github.com/xcp-ng-rpms/varstored.git /var/lib/mock/v8.3-incoming-9801-28519/root/chroot_tmpdir/scmroot/varstored
Cloning into '/var/lib/mock/v8.3-incoming-9801-28519/root/chroot_tmpdir/scmroot/varstored'...
$ git fetch origin 11e9ec54f4ef435bd354ce77948ad826bfd38971:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/varstored
 * [new ref]         11e9ec54f4ef435bd354ce77948ad826bfd38971 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 11e9ec5 Merge pull request #8 from xcp-ng-rpms/dbx-fix