$ git clone -n https://src.fedoraproject.org/rpms/libcdson.git /var/lib/mock/f45-build-15967-481/root/chroot_tmpdir/scmroot/libcdson
Cloning into '/var/lib/mock/f45-build-15967-481/root/chroot_tmpdir/scmroot/libcdson'...
$ git fetch origin e45ff5f1bf8a13a9f45bd774a04785fd748aa4c5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libcdson
 * [new ref]         e45ff5f1bf8a13a9f45bd774a04785fd748aa4c5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e45ff5f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild