$ git clone -n https://src.fedoraproject.org/rpms/libmodbus.git /var/lib/mock/f39-build-1531469-36214/root/chroot_tmpdir/scmroot/libmodbus
Cloning into '/var/lib/mock/f39-build-1531469-36214/root/chroot_tmpdir/scmroot/libmodbus'...
$ git fetch origin c03a0b2a5b70e467e1e17c2da9617ba7fcbe72eb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libmodbus
 * [new ref]         c03a0b2a5b70e467e1e17c2da9617ba7fcbe72eb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c03a0b2 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild