$ git clone -n https://src.fedoraproject.org/rpms/python-boxsdk.git /var/lib/mock/f39-build-1605735-38602/root/chroot_tmpdir/scmroot/python-boxsdk
Cloning into '/var/lib/mock/f39-build-1605735-38602/root/chroot_tmpdir/scmroot/python-boxsdk'...
$ git fetch origin 84e4dad2606bfb77c922b324840adaaac549e8c3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-boxsdk
 * [new ref]         84e4dad2606bfb77c922b324840adaaac549e8c3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 84e4dad 3.8.1