$ git clone -n https://src.fedoraproject.org/rpms/python-stack-data.git /var/lib/mock/f45-build-33178-667/root/chroot_tmpdir/scmroot/python-stack-data
Cloning into '/var/lib/mock/f45-build-33178-667/root/chroot_tmpdir/scmroot/python-stack-data'...
$ git fetch origin 739f636cf1b33d5b534cb772c093556658a1a546:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-stack-data
 * [new ref]         739f636cf1b33d5b534cb772c093556658a1a546 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 739f636 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild