$ git clone -n https://src.fedoraproject.org/rpms/freefem++.git /var/lib/mock/f40-build-801696-143849/root/chroot_tmpdir/scmroot/freefem++
Cloning into '/var/lib/mock/f40-build-801696-143849/root/chroot_tmpdir/scmroot/freefem++'...
$ git fetch origin 3752d3e40579515a948e1b3ca1fa5a35c7290256:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/freefem++
 * [new ref]         3752d3e40579515a948e1b3ca1fa5a35c7290256 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3752d3e Disable checks on riscv64