$ git clone -n https://src.fedoraproject.org/rpms/plasma5support.git /var/lib/mock/f40-build-2255743-54263/root/chroot_tmpdir/scmroot/plasma5support
Cloning into '/var/lib/mock/f40-build-2255743-54263/root/chroot_tmpdir/scmroot/plasma5support'...
$ git fetch origin 86ae9991c8c95d4c4a9a23e96665cd4aa6bd3f0c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma5support
 * [new ref]         86ae9991c8c95d4c4a9a23e96665cd4aa6bd3f0c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 86ae999 Fixing more libraries...