$ git clone -n https://src.fedoraproject.org/rpms/python-dropbox.git /var/lib/mock/f45-build-30576-646/root/chroot_tmpdir/scmroot/python-dropbox
Cloning into '/var/lib/mock/f45-build-30576-646/root/chroot_tmpdir/scmroot/python-dropbox'...
$ git fetch origin 0db1f2a4617e812f7569e3673a4b20d072fd5493:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-dropbox
 * [new ref]         0db1f2a4617e812f7569e3673a4b20d072fd5493 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0db1f2a 12.2.2