$ git clone -n https://src.fedoraproject.org/rpms/zathura-ps.git /var/lib/mock/f40-build-1138365-20833/root/chroot_tmpdir/scmroot/zathura-ps
Cloning into '/var/lib/mock/f40-build-1138365-20833/root/chroot_tmpdir/scmroot/zathura-ps'...
$ git fetch origin 4d7fc7e782f225846939ec2d1f3d2dda49848ee0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/zathura-ps
 * [new ref]         4d7fc7e782f225846939ec2d1f3d2dda49848ee0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4d7fc7e Rebuild against zathura 0.5.6