$ git clone -n https://src.fedoraproject.org/rpms/pngquant.git /var/lib/mock/f41-build-1219734-22741/root/chroot_tmpdir/scmroot/pngquant
Cloning into '/var/lib/mock/f41-build-1219734-22741/root/chroot_tmpdir/scmroot/pngquant'...
$ git fetch origin 9daf7397328c8cf10b4757cb0b2746df0c8a57ab:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pngquant
 * [new ref]         9daf7397328c8cf10b4757cb0b2746df0c8a57ab -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9daf739 Eliminate use of obsolete %patchN syntax (#2283636)