$ git clone -n https://src.fedoraproject.org/rpms/kwin.git /var/lib/mock/f40-build-2411199-60561/root/chroot_tmpdir/scmroot/kwin
Cloning into '/var/lib/mock/f40-build-2411199-60561/root/chroot_tmpdir/scmroot/kwin'...
$ git fetch origin 5025045e8422c8a6d2063b7457dd7345a50b0696:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kwin
 * [new ref]         5025045e8422c8a6d2063b7457dd7345a50b0696 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5025045 Rebuild (qt6)