$ git clone -n https://src.fedoraproject.org/rpms/perl-Compress-LZF.git /var/lib/mock/f40-build-2243452-53669/root/chroot_tmpdir/scmroot/perl-Compress-LZF
Cloning into '/var/lib/mock/f40-build-2243452-53669/root/chroot_tmpdir/scmroot/perl-Compress-LZF'...
$ git fetch origin 9ccfa646433043171eb5469390ae51cf5bc3b54d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Compress-LZF
 * [new ref]         9ccfa646433043171eb5469390ae51cf5bc3b54d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9ccfa64 Avoid use of deprecated patch syntax