$ git clone -n https://src.fedoraproject.org/rpms/kmenuedit.git /var/lib/mock/f40-build-2096356-50403/root/chroot_tmpdir/scmroot/kmenuedit
Cloning into '/var/lib/mock/f40-build-2096356-50403/root/chroot_tmpdir/scmroot/kmenuedit'...
$ git fetch origin 9251f3933706c3285a68dcee6f8e0aff25dad99b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kmenuedit
 * [new ref]         9251f3933706c3285a68dcee6f8e0aff25dad99b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9251f39 fix: upload missing sources