$ git clone -n https://src.fedoraproject.org/rpms/pyjokes.git /var/lib/mock/f42-build-3285424-41413/root/chroot_tmpdir/scmroot/pyjokes
Cloning into '/var/lib/mock/f42-build-3285424-41413/root/chroot_tmpdir/scmroot/pyjokes'...
$ git fetch origin 6a143e43c4a62c178241a86e7ff0eb277b19f6b8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pyjokes
 * [new ref]         6a143e43c4a62c178241a86e7ff0eb277b19f6b8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6a143e4 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild