$ git clone -n https://src.fedoraproject.org/rpms/mrxvt.git /var/lib/mock/f40-build-806297-144997/root/chroot_tmpdir/scmroot/mrxvt
Cloning into '/var/lib/mock/f40-build-806297-144997/root/chroot_tmpdir/scmroot/mrxvt'...
$ git fetch origin d54277f07ea4e4150bc2ce3093cecf718e13d706:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mrxvt
 * [new ref]         d54277f07ea4e4150bc2ce3093cecf718e13d706 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d54277f Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild