$ git clone -n https://src.fedoraproject.org/rpms/libcdson.git /var/lib/mock/f40-build-2006934-45213/root/chroot_tmpdir/scmroot/libcdson
Cloning into '/var/lib/mock/f40-build-2006934-45213/root/chroot_tmpdir/scmroot/libcdson'...
$ git fetch origin 9c8f21ab097d739ff36f9516a56df2c6450e5be1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libcdson
 * [new ref]         9c8f21ab097d739ff36f9516a56df2c6450e5be1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9c8f21a Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild