$ git clone -n https://src.fedoraproject.org/rpms/nativefiledialog-extended.git /var/lib/mock/f40-build-1981380-25246/root/chroot_tmpdir/scmroot/nativefiledialog-extended
Cloning into '/var/lib/mock/f40-build-1981380-25246/root/chroot_tmpdir/scmroot/nativefiledialog-extended'...
$ git fetch origin 8eb8e137fa8d224345777be64669b7df6ff05940:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nativefiledialog-extended
 * [new ref]         8eb8e137fa8d224345777be64669b7df6ff05940 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8eb8e13 update to 1.2.1