$ git clone -n https://src.fedoraproject.org/rpms/nanopb.git /var/lib/mock/f40-build-2411644-60561/root/chroot_tmpdir/scmroot/nanopb
Cloning into '/var/lib/mock/f40-build-2411644-60561/root/chroot_tmpdir/scmroot/nanopb'...
$ git fetch origin 89faea0aa4afc880712daea2ab356496ce1e74cd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nanopb
 * [new ref]         89faea0aa4afc880712daea2ab356496ce1e74cd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 89faea0 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild