$ git clone -n https://src.fedoraproject.org/rpms/libmodbus.git /var/lib/mock/f40-build-785853-134129/root/chroot_tmpdir/scmroot/libmodbus
Cloning into '/var/lib/mock/f40-build-785853-134129/root/chroot_tmpdir/scmroot/libmodbus'...
$ git fetch origin 841c4b3d4cdb3be907c442e6ccd69850809f1be7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libmodbus
 * [new ref]         841c4b3d4cdb3be907c442e6ccd69850809f1be7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 841c4b3 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild