$ git clone -n https://src.fedoraproject.org/rpms/python-boxsdk.git /var/lib/mock/f42-build-side-1-3499393-45964/root/chroot_tmpdir/scmroot/python-boxsdk
Cloning into '/var/lib/mock/f42-build-side-1-3499393-45964/root/chroot_tmpdir/scmroot/python-boxsdk'...
$ git fetch origin 6da6d11144e9fc99921861d419edab150c2cc3f8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-boxsdk
 * [new ref]         6da6d11144e9fc99921861d419edab150c2cc3f8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6da6d11 3.14.0