$ git clone -n https://src.fedoraproject.org/rpms/python-dropbox.git /var/lib/mock/f41-build-745362-13348/root/chroot_tmpdir/scmroot/python-dropbox
Cloning into '/var/lib/mock/f41-build-745362-13348/root/chroot_tmpdir/scmroot/python-dropbox'...
$ git fetch origin 147d2245917b0451aa678b06c3daeb2b46ed7322:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-dropbox
 * [new ref]         147d2245917b0451aa678b06c3daeb2b46ed7322 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 147d224 12.0.2