$ git clone -n https://src.fedoraproject.org/rpms/owncloud-client.git /var/lib/mock/f41-build-side-1-3070162-38790/root/chroot_tmpdir/scmroot/owncloud-client
Cloning into '/var/lib/mock/f41-build-side-1-3070162-38790/root/chroot_tmpdir/scmroot/owncloud-client'...
$ git fetch origin cfcf8a149e8740f972654380541b401ff7140b36:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/owncloud-client
 * [new ref]         cfcf8a149e8740f972654380541b401ff7140b36 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cfcf8a1 Orphaned for 6+ weeks