$ git clone -n https://src.fedoraproject.org/rpms/flatpak-kcm.git /var/lib/mock/f40-build-2409388-60560/root/chroot_tmpdir/scmroot/flatpak-kcm
Cloning into '/var/lib/mock/f40-build-2409388-60560/root/chroot_tmpdir/scmroot/flatpak-kcm'...
$ git fetch origin 5451a51a06f79f3b6da029241d1797f34abb2be0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/flatpak-kcm
 * [new ref]         5451a51a06f79f3b6da029241d1797f34abb2be0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5451a51 5.93.0