$ git clone -n https://src.fedoraproject.org/rpms/jackson-parent.git /var/lib/mock/f40-build-2295382-56325/root/chroot_tmpdir/scmroot/jackson-parent
Cloning into '/var/lib/mock/f40-build-2295382-56325/root/chroot_tmpdir/scmroot/jackson-parent'...
$ git fetch origin 3f9e4b56c38cff20d68b34df26b8a27f7435be20:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/jackson-parent
 * [new ref]         3f9e4b56c38cff20d68b34df26b8a27f7435be20 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3f9e4b5 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild