$ git clone -n https://github.com/xcp-ng-rpms/varstored.git /var/lib/mock/v8.3-ci-9545-28291/root/chroot_tmpdir/scmroot/varstored
Cloning into '/var/lib/mock/v8.3-ci-9545-28291/root/chroot_tmpdir/scmroot/varstored'...
$ git fetch origin 42fea4c652cf6fc61338d7b19a1df4e3108da06b:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/varstored
 * [new ref]         42fea4c652cf6fc61338d7b19a1df4e3108da06b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 42fea4c Merge pull request #7 from xcp-ng-rpms/dbx-fix