$ git clone -n https://src.fedoraproject.org/rpms/python-bitcoinlib.git /var/lib/mock/f45-build-29846-641/root/chroot_tmpdir/scmroot/python-bitcoinlib
Cloning into '/var/lib/mock/f45-build-29846-641/root/chroot_tmpdir/scmroot/python-bitcoinlib'...
$ git fetch origin 5f4c988350282eee21c22cfaecc57bc30e555b0c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-bitcoinlib
 * [new ref]         5f4c988350282eee21c22cfaecc57bc30e555b0c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5f4c988 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild