$ git clone -n https://src.fedoraproject.org/rpms/loupe.git /var/lib/mock/f40-build-2334849-59332/root/chroot_tmpdir/scmroot/loupe
Cloning into '/var/lib/mock/f40-build-2334849-59332/root/chroot_tmpdir/scmroot/loupe'...
$ git fetch origin 865705deaf313d9038ee6becc4f6e96d805997c1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/loupe
 * [new ref]         865705deaf313d9038ee6becc4f6e96d805997c1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 865705d Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild