$ git clone -n https://src.fedoraproject.org/rpms/python-pyuca.git /var/lib/mock/f45-build-32683-661/root/chroot_tmpdir/scmroot/python-pyuca
Cloning into '/var/lib/mock/f45-build-32683-661/root/chroot_tmpdir/scmroot/python-pyuca'...
$ git fetch origin ca826b3a31e3fe96df65f88e922fa1fc9ee1dc7a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-pyuca
 * [new ref]         ca826b3a31e3fe96df65f88e922fa1fc9ee1dc7a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ca826b3 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild