$ git clone -n https://src.fedoraproject.org/rpms/python-fqdn.git /var/lib/mock/f45-build-30765-647/root/chroot_tmpdir/scmroot/python-fqdn
Cloning into '/var/lib/mock/f45-build-30765-647/root/chroot_tmpdir/scmroot/python-fqdn'...
$ git fetch origin c2cc5f29390e01d0e3b16d92c53ef28c9b701ad5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-fqdn
 * [new ref]         c2cc5f29390e01d0e3b16d92c53ef28c9b701ad5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c2cc5f2 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild