$ git clone -n https://github.com/xcp-ng-rpms/varstored.git /var/lib/mock/v8.3-incoming-8951-27883/root/chroot_tmpdir/scmroot/varstored
Cloning into '/var/lib/mock/v8.3-incoming-8951-27883/root/chroot_tmpdir/scmroot/varstored'...
$ git fetch origin 8b0324d43910eb1394e918d438fe582031b995f0:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/varstored
 * [new ref]         8b0324d43910eb1394e918d438fe582031b995f0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8b0324d Merge branch 'XS-8.3' into 8.3-import_varstored-1.2.0-3.xs8.src.rpm