$ git clone -n https://src.fedoraproject.org/rpms/python-pytn3270.git /var/lib/mock/f45-build-32706-661/root/chroot_tmpdir/scmroot/python-pytn3270
Cloning into '/var/lib/mock/f45-build-32706-661/root/chroot_tmpdir/scmroot/python-pytn3270'...
$ git fetch origin 20b149e1c3d10ae9284fc16fb9bd6bacf550ce9b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-pytn3270
 * [new ref]         20b149e1c3d10ae9284fc16fb9bd6bacf550ce9b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 20b149e Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild